Reagentes Sintéticos

<p>Applications (1S)-[1,1'-Binaphthalene]-2,2'-diol is used in the stereoselective synthesis of Peloruside A. Also used in the synthesis of BINAP-based aminophosphines.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Raghavan, S. et al.: Tetrahedron, 69, 4835 (2013); Anstiss, C. et al.: Mol., 18, 2788 (2013);<br></p>

<p>Applications Tetrapropylammonium bromide (cas# 1941-30-6) is a useful research chemical.<br></p>

<p>Applications o-Chloramine T (cas# 110076-44-3) is a useful research chemical.<br></p>

<p>Applications ABT 925 Fumerate is a dopamine D3 receptor antagonist that is used in the treatment of acute schizophrenia (1).<br>References (1) Redden, L., et al.: J. Clin. Psychopharmacol, 31, 221 (2011)<br></p>

<p>Applications 5-Methyltryptamine is a methylated derivative of tryptamine. 5-Methyltryptamine is a weak antagonist of 5-Hydroxytryptamine (H974990) with weak potency as stimulants of the cardiac sympathetic nerves. 5-Methyltryptamine is also used in the preparation of inhibitors of kinesin spindle protein (KSP), a promising class of anticancer agents.<br>References Fozard, J.R. et al.: Naun.-Schmied. Arch. Pharmacol., 301, 223 (1978); Slotkin, T. et al.: Mol. Pharmacol., 15, 607 (1979); Liu, F. et al.: Bioorg. Med, Chem., 18, 4167 (2010);<br></p>

<p>Applications A potent, selective and orally bioavailable Smoothened (SMO) antagonist; it inhibits hedgehog (Hh) signaling pathway via antagonism of the Smoothened receptor (SMO). Antineoplastic. Potent Hedgehog inhibitor.<br>References Berman, D., et al.: Science, 297, 1559 (2002), Varjosalo, M., et al.: Cell, 133, 537 (2008), Theunissen, J., et al.: Cancer Res., 69, 6007 (2009),<br></p>

<p>Applications Entinostat is an emerging HDACi (histone deacetylase inhibitor). Entinostat is used for treatment of solid tumors and hematologic malignancies. Potent Histone deacetylase inhibitor.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Hu, E., et al.: J. Pharmacol. Exp. Ther., 307, 720 (2003), Maggio, S., et al.: Cancer Res., 64, 2590 (2004), Gojo, I., et al.: Blood, 109, 2781 (2007), Xu, W; Oncogene, 26, 5541 (2007),<br></p>

<p>Applications 3-Pyridinemethanol is a useful synthetic intermediate. It can be used in the synthesis of histone deacetylase inhibitors. It can also be used to prepare (phenyl)(cyanopyrazinyl)urea derivatives as possible kinase-1 (Chk1) inhibitors.<br>References Suzuki, T., et al.: J. Med. Chem., 42, 3001 (1999); Li, G., et al.: Bioorg. Med. Chem. Lett., 16, 2293 (2006)<br></p>

<p>Applications (S)-5,6-Dehydro Pregabalin is derived from rac 5,6-Dehydro Pregabalin (D230055), which is an impurity of the anti-convulsant, Pregabalin (P704800).<br>References Dousa, M, et al.: J. Pharmac. Biomed. Anal., 53, 717 (2010);<br></p>

<p>Stability Hygroscopic<br>Applications 9-Mesityl-10-methylacridinium Tetrafluoroborate can be used for the synthesis of γ-butyrolactones, γ-lactams and pyrrolidines. 9-Mesityl-10-methylacridinium Tetrafluoroborate has been reported by Nicewicz et al. to mediate myriad transformations through Photoredox Catalysis. The applications include the anti-Markovnikov hydroamination of alkenes and addition of carboxylic acids to alkenes and the hydrotrifluoromethylation of styrenes using the Langlois reagent S673690.<br>References Gesmundo, N. J. et al.: Org. Lett. 17, 1316 (2015); Zeller, M. A., et al.: Org. Lett. 16, 4810 (2014); Nicewicz et al., J. Am. Chem. Soc., 135 (26), 9588–9591(2013)<br></p>

<p>Applications LY 2874455 is a pan-FGFR inhibitor which remain the focus of research for use in lung and bladder cancers.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Gozgit, J. et al.: Mol. Cancer Ther., 11, 690 (2012); Zhao, G. et al.: Mol. Cancer Ther., 10, 2200 (2011);<br></p>

<p>Stability Hygroscopic<br>Applications XL413 is a potent and selective cell division cycle 7 homolog (CDC7) kinase inhibitor.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Koltun, E., et al.: Bioorg. Med. Chem. Lett., 22, 3727 (2012)<br></p>

<p>Applications Brincidofovir is an antiviral inhibitor, working against BK polymavirus replication in primary human urothelial cells. Cytostatic, cytotoxic agent.<br>References Tylden, G. et al.: Antimicrob. Agent. Chemother., 59, 3306 (2015); Cardile, A. et al.: Recent Patents Anti-Infect. Drug DIscov., 9, 97 (2014)<br></p>

<p>Applications 2,3-Diaminopyridine is used as a reagent in the synthesis of novel imidazopyridine derivatives which can exhibit cytotoxic activity against MCF-7 human breast adenocarcinoma cell line. 2,3-Diaminopyridine is also used in the preparation of non-camptothecin topoisomerase I inhibitors which exhibit antitumor activity.<br>References Puskullu, M.O., et al.: Chem. Heterocyc. Compd., 51, 723 (2015); Zhang, C., et al.: Bioorg. Med. Chem. Lett., 25, 4693 (2015)<br></p>

<p>Applications (R)-Ethyl 4-chloro-3-hydroxybutanoate is used in biological studies for asymmetric reduction of ethyl 4-chloro-3-oxobutanoate to ethyl (R)-4-chloro-3-hydroxybutanoate with two co-existing, recombinant Escherichia coli strains.<br>References Liu, Y., et al.: Biotech. Lett., 27, 119 (2005);<br></p>

<p>Applications (2R)-2-[Bis[3,5-bis(trifluoromethyl)phenyl][(trimethylsilyl)oxy]methyl]-pyrrolidine is often used as a catalyst in organocatalytic Michael addition reactions.<br>References Veerasamy, N., et al.: J. Org. Chem., 78, 4779 (2013); Liu, R., et al.: Org. Lett., 15, 2266 (2013); Veerasamy, N., et al.: Org. Lett., 14, 1596 (2012)<br></p>

<p>Applications Synthetic pentasaccharide corresponding to the anti-thrombin binding site of heparin. Anti-thrombotic.<br>References Herbert, J.M., et al.: Cardiovasc. Drug Rev., 15, 1 (1997), Turpie, A.G.G., et al.: Expert Opin. Drug Saf., 4, 707 (2005),<br></p>

<p>Applications 5-(Trifluoromethyl)picolinic Acid is an intermediate used in the synthesis of β-secretase (BACE) inhibitors.<br>References Tresadern, G., et al.: Bioorg. Med. Chem. Lett., 21, 7255 (2011); Watanabe, T., et al.: Bioorg. Med. Chem., 20, 5839 (2010);<br></p>

<p>Applications A Wittig reagent.<br></p>

<p>Applications N-DesBoc Docetaxel is an impurity in the synthesis of Docetaxel (D494420), a semisynthetic derivative of Paclitaxel. An antimitotic agent that promotes the assembly of micro-tubules and inhibits their de-polymerization to free tubulin. An antine oplastic.<br>References Ringel, I., et al.: J. Natl. Cancer Inst., 83, 288 (1991), Extra, J.-M., et al.: Cancer Res., 53, 1037 (1993)<br></p>

<p>Applications Mirin is an MRN-ATM pathway inhibitor blocking 3’ and 5’ exonuclease activity associated with Mre11, inducing G2 cell cycle arrest.<br>References Shibata, A. et al.: Mol Cell., 53, 7 (2014);<br></p>

<p>Applications N-Methylcyclohexanamine is a chemical reagent used in the synthesis of Mps1 kinase inhibitors used in cancer research. Also used in the synthesis of antituberculosis agents as indole-2-carboxamides.<br>References Bursavich, M. et al.: Bioorg. Med. Chem. Lett., 23, 6829 (2013); Kondreddi, R. et al.: J. Med. CHem., 56, 8849 (2013);<br></p>

<p>Applications 6-Bromopurine is a brominated derivative of purine used in various organic syntheses. Used in the synthesis of several benzo-fused scaffolds with purine or pyrimidine moietes which display antitumor and anticancer properties.<br>References Morales, F. et al.: Eur, J. Med. Chem., 76, 118 (2014); Cushing, T. et al.: J. Med. Chem., 58, 480 (2015); Jansen, R., et al.: Clin. Biochem., 38, 362 (2005),<br></p>

<p>Applications (S)-(−)-α,4-Dimethylbenzylamine was used in the study of heterogeneous Raney nickel and cobalt catalysts for racemization and dynamic kinetic resolution of amines.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Parvulescu, A., et al.: Adv. Synth. Catal., 350, 113 (2008);<br></p>

<p>Applications 5-Chloro-2-methylaminopyridine is used in the preparation of aminosulfuranes with N-heterocyclic groups.<br>References Pashinnik, V.E. et al.: Ukr. Khim. Zhur., 73, 45 (2007);<br></p>

<p>Stability Hygroscopic<br>Applications Omeprazole Sodium Salt is the salt analogue of Omeprazole (O635000), which binds covalently to proton pump. It inhibits gastric secretion. Used as an anttiulcerative.<br>References Muller, P., et al.: Arzneimittel-Forsch., 33, 1685 (1983); Wallmark, B., et al.: Biochim. Biophys. Acta., 778, 549 (1984); Morii, M., et al.: J. Biol. chem., 268, 21553 (1993); Ritter, M., et al.: Br. J. Pharmacol., 124, 627 (1998)<br></p>

<p>Applications Zinc Acetate is used in biological studies and pharmacological activity of motexafin gadolinium disruptions of zinc metabolism in human cancer cell lines.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Magda, D., et al.: Cancer Res., 65, 3837 (2005);<br></p>

<p>Applications A macrolide isolated from Penicillium brefeldianum. It affects the vesticular transport of the Golgi apparatus and induces DNA fragmentation which leads to apoptosis.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Misumi, Y., et al.: J. Biol. Chem., 261 (1986), Mordente, J.A., et al.: J. Urol., 159, 275 (1998), Erokhina, M.V., et al.: Membr. Cell Biol., 12, 871 (1999), Nojiri, H., et al.: FEBS Letters, 453, 140 (1999),<br></p>

<p>Applications 3-Phenylpropyne is a useful synthetic intermediate. It is an intermediate used to synthesize carlina oxide. It can also be used to prepare triazole substituted pyrazolopyrimidinamide derivatives via click chemistry as potential inhibitors of the Plasmodium falciparum PfPK7 protein kinase.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Klein, M., et al.: Org. Biomol. Chem., 7, 3421 (2009)<br></p>

<p>Applications A reagent used in the synthesis of Pitavastatin.<br>References Mukaiyama, H., et al.: Chem. Pharm. Bull., 55, 881 (2007), Paruch, K., et al.: Bioorg. Med. Chem. Lett., 17, 6220 (2007),<br></p>

<p>Applications (4R,5R)-2,2-Dimethyl-α,α,α',α'-tetra-2-naphthalenyl-1,3-dioxolane-4,5-dimethanol, is a privileged ligand analogue of TADDOLs. It can be broadly used in asymmetric synthesis. It is also shown that the titanium TADDOLate catalysts have broad application towards carbonyl addition and cycloaddition.<br>References Seebach, D., et al.: Ange. Chem. Inter. Ed., 40, 92, (20010;<br></p>

<p>Applications AMG 337 is a potent and selective inhibitor of mesencymal epethelial transition factor (MET factor) which has been implicated in several cancers.<br>References Boezio, A. et al.: J. Med. Chem., 59, 2326 (2016);<br></p>

<p>Applications Chlorotripyrrolidinophosphonium Hexafluorophosphate acts as a peptide coupling reagent or condensing agent for phosphinate ester formation.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Prasad, K. et al.: Int. J. Pharm. Sci. Rev. Res., 8, 108 (2011); Winqvist, A. et al.: Eur. J. Org. Chem. 10, 1705 (2008);<br></p>

<p>Applications Cediranib is a drug for blocking angiogenesis, study on cervical cancer molecular targeted drug and clinical application progress, value of correlative biomakers in the understanding of tumor biology.<br>References Shao, J., et al.: Shiyong Yixue Zazhi, 31, 4143 (2015); Gerstner, E. R., et al.: Transl. Cancer Res., 5, 211 (2016)<br></p>

<p>Stability Moisture Sensitive<br>Applications N,N-Dimethylphosphoramidodichloridate functions as a reagent used in the inhibition of acetylcholinestrase and butyryl cholinestrase by nerve agent surrogates. Also, the are used as reagents in the synthesis and in the antitumor activity of nonsymmetric phosphoric acid triamides.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Meek, E. C., et al.: Toxicol. Sci., 126, 525 (2012); Kosykhova, L., et al.: Pharm. Chem., 34, 525 (2000)<br></p>

<p>Applications Inhibitor of phosphatidylinositol 3-kinases, P13K and mTOR. Potent PI3K/mTOR Dual Inhibitor.<br>References Konstantinidou, G., et al.: Cancer Res., 69, 7644 (2009), Frederick, R., et al.: Bioorg. Med. Chem. Lett., 19, 5842 (2009), Pollizzi, K., et al.: Mol. Cancer, 8 (2009),<br></p>

<p>Stability Very Hygroscopic<br>Applications Labelled Plerixafor, it is a hematopoietic stem cell (HSC) mobilizer that inhibits the CXCR4 chemokine receptor and blocks binding of its ligand, stromal cell-derived factor-1-α (SDF-1-α). This agent was approved on Dec. 15, 2008, as treatment in combination with granulocyte-colony stimulating factor (G-CSF) to mobilize HSCs to the peripheral blood for collection and subsequent autologous transplantation in patients with non-Hodgkin's lymphoma (NHL) and multiple myeloma (MM).<br>References Xie, T., et al.: Science, 290, 328 (2000), Leone, D., et al.: J. Pharmacol. Exp. Ther., 305, 1150 (2003), Chigaev, A., et al.: J. Immunol. 178, 6828 (2007), Kiel, M., et al.: Cell Stem Cell, 1, 204 (2007),<br></p>

<p>Applications Rhenium Carbonyl, is used as a catalyst and in material science. iIt is also a key starting material used for the synthesis of other rhenium carbonyl complexes. It plays an important role in metathesis, reforming and hydrogenation reactions.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Kremlev, K. V., et al.: J. Surf. Ingestig.-X-Ray Synchro. 2015, 9 (4), 694-698.; Di, X., et al.: Catal. Sci. Technol. 2015, 5 (4), 2441-2448.;<br></p>

<p>Applications Nimustine Hydrochloride is a DNA alkylator and cross-linking agent. It is used in chemotherapy in a part of anti-cancer cocktail used to treat malignant melanoma.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Matsumoto, T. et al.: J. Eur. Acad. Dermatol. Venereol., 27, 1514 (2013);<br></p>

<p>Applications Ixazomib is a proteasome inhibitor that acts by preventing cell growth in solid tumours. It is an anticancer agent that is used to treat patients with multiple myeloma and is potentially neurotoxic.<br>References Anderson, K.: J. Nat. Comp. Canc. Net., 12, 808 (2014); Chattopadhyay, N., et al.: Mol. Cancer Ther., 12, B156 (2013); Vallet, S. &amp; Podar, K.: Exp. Opin. Biol. Ther., 13, S35 (2013)<br></p>

<p>Applications An intermediate of synergistic pesticide Boscalid. Also, used in the preparation of thieno[2.3-b]pyrrole derivatives as cannabinoid receptor agonists useful in mono- and combination therapy of diseases.<br>References Granger, D., et al.: Arthritis Rheum., 37, 1053 (1994), Robinson, R., et al.: J. Med. Chem., 39, 10 (1996),<br></p>

<p>Applications 3,5-Di-t-butyl-2-hydroxybenzaldehyde is a salicylaldehyde derivative with antibacterial activity used in the preparation nickel complexes. 3,5-Di-t-butyl-2-hydroxybenzaldehyde is structurally related to 3,5-di-t-butylcatechol (DTCAT) but is not as potent an activator of rat skeletal muscle ryanodine receptor Ca2+ channel (RyRC).<br>References Tuerkkan, B. et al.: Trans. Met. Chem., 36, 679 (2011); Fusi, F. et al.: Biochem. Biopharmacol., 69, 485 (2005);<br></p>

<p>Applications 3-Fluoro-4-methoxybenzaldehyde is a useful reagent in the synthesis of resveratrol derivatives as potent inhibitors of lysine specific demethylase 1 (LSD1), a therapeutic target for cancer treatment and other related diseases. Also a reagent for the synthesis of substituted pyrazolyl piperidine derivatives as antiplatelet agents with antiplatelet aggregation activity in the human body.<br>References Duan, Y., et al.: Eur. J. Med. Chem., 126, 246 (2017); Soni, J. Y., et al.: J. Heterocyclic Chem., 54, 1279 (2017)<br></p>

<p>Applications Dimethyl Acetylenedicarboxylate is a biocide that is added to biodiesels to inhibit and remove microbial growth. It can rapidly penetrate the skin and cause aberrations in the activities of the glycogenic, lipogenic, and tricarboxylic acid metabollic pathways. It also causes delayed and pain-free dermal burns.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Poon, R., et al.: Arch. Toxicol., 85(11), 1419-1427 (2011); Klain, George J., et al.: Fund. Appl. Toxicol., 10(4), 730-5 (1988); Slovak, A. J. M., et al.: Contact Dermatitis, 11(1), 29-30 (1984)<br></p>

<p>Applications 2,3-Dichloroquinoxaline is a dichlorinated quinoxaline derivative with antimicrobial activity. 2,3-Dichloroquinoxaline is used in the preparation of quinoxaline derivatives of cancer chemopreventive activity.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Metzner, J. et al.: Pharmazie, 36, 368 (1981); Galal, S.A&gt; et al.: Eur. J. Med. Chem., 46, 327 (2011);<br></p>

<p>Applications 2,6-Dichloro-1,4-benzoquinone is a disinfection byproduct in drinking water and a halobenzoquinone (HBQ) that has been reported to be cytotoxic to T24 bladder cancer cells.<br>References Huang, H., et al.: Huanjing Yu Jiankang Zazhi, 31, 471 (2014); Du, H., et al.: Environ. Sci. Technol., 47, 2823 (2013)<br></p>

<p>Applications Used in the preparation of ibuprofen derivatives for their anti-inflammatory activity. Also used in nucleation inhibitors in Dutch resolution of diastereomers.<br>References Leeman, M. et al.: Angew. Chem. Int. Ed., 47, 1287 (2008); Eur. J. Med. Chem., 45, 3564 (2010);<br></p>

<p>Applications 3'-Bromoacetophenone is a chemical reagent used in the synthesis of chalcone derivatives as anti-cancer agents. Also used in the preparation of biphenyl pyridazinone deriatives as PDE4 inhibitors in anti-inflammatory treatments.<br>References Madhavi, S. et al.: Lett. Org. 13, 682 (2016); Gracia, J. et al.: J. Med. Chem., 59, 10479 (2013);<br></p>

<p>Stability Hygroscopic<br>Applications Niperoditine is a H2 antagonists used in the treatment intestinal disorders.<br>References Mannino, S. et al.: Pharmacoepidemiol. Drug Safety, 7, 233 (1998); Miyaji, Y. et al.: Bioanalysis., 4, 263 (2012);<br></p>

<p>Applications 2-Cl-IB-MECA acts as an A3 adenosine receptor-selective nucleoside.<br>References Tosh, D. et al.: J. Med. Chem., 55, 4847 (2012);<br></p>

<p>Stability Hygroscopic<br>Applications A semi-synthetic derivative of Podophyllotoxin. Antineoplastic.<br>References Stahlen, H., Eur. J. Cancer, 6, 303 (1970), Hacker, M., et al.: Cancer Res., 37, 3287 (1977), Clark, P.I., et al.: Clin. Pharmacokinet., 12, 223 (1987),<br></p>

<p>Applications 1-Phenyl-1-cyclohexene is metabolite of Phencyclidine (P295500), an anesthetic.<br>References Wong, L.K., et al.L Biomed. Sci. Spec., 2, 204 (1975); Chen, G., et al.: J. Pharmacol. Exp. Ther., 127, 241 (1959); Bailey, K., et al.: J. Pharm. Pharmacol., 28, 713 (1976); Balster, R.L., J. Psychedelic Drugs., 10115 (1978); Johnson, K.M., et al.: Annu. Rev. Pharmacol. Toxicol., 30, 707 (1990)<br></p>

<p>Stability Very Hygroscopic<br>Applications Gadolinium Trichloride is a calcium-sensing receptor agonist and is known to work by inducing NLRP3 inflammasome activation in bone marrow-derived macrophages.<br>References Toyoda, Y., et al.: Toxicol. Sci., 126, 16 (2012); Ciceri, P., et al.: Biochem. Biophy. Res. Comm., 418, 770 (2012); Dangi.A., et al.: J. Immunol., 188, 3667 (2012);<br></p>

<p>Applications 4-(Aminomethyl)-Cyclohexanecarboxylic Acid (cas# 701-54-2) is a useful research chemical.<br></p>

<p>Applications Tetramethylammonium Tetrafluoroborate (cas# 661-36-9) is a useful research chemical.<br></p>

<p>Applications R-(-)-Rolipram is a phosphodiesterase IV (PDE4) inhibitor and anti-inflammatory agent with some antidepressant activity. It is the R isomer of (±)-Rolipram (R640040). Potent PDE4 inhibitor.<br>References Semmler, J., et al.: Int. J. Immunopharmacol.: 15, 409 (1993); Sommer, N., et al.: Nat. Med.: 1, 244 (1995); Robichaud, A., et al.: J. Clin. Invest., 110, 1045 (2002); Card, G., et al.: Structure: 12, 2233 (2004);<br></p>

<p>Stability Hygroscopic<br>Applications 5-Amino-6-nitroquinoline is a reagent used in the synthesis of benzodiazepine sulfonamide-based bombesin receptor 3 agonists. It is also used in the synthesis of quinoxalinediones.<br>References Liu, P. et al.: ACS. Med. Chem. Lett., 2, 933 (2011); Bigge, C. et al.: J. Med. Chem., 38, 5720 (1995);<br></p>

<p>Applications Trimethylboroxin (50% Solution in THF) is used in a diverse array of areas, including as a polymerization additive. Trimethylboroxin is also used in the preparation of CBS catalysts for asymmetric reductions.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Gilmore, N., et al.: Tetrahedron Asy., 14, 2115 (2003); Najera, C., et al.: Adv. Synth. Catal., 346, 1798 (2004);<br></p>

<p>Applications 5-Amino-2-methylene-1,3,3-trimethylindoline (cas# 6872-05-5) is a compound useful in organic synthesis.<br></p>

<p>Applications is an (2S)-2-(Methoxydiphenylmethyl)pyrrolidine intermediate in the synthesis of α-Zingiberene which is a sesquiterpine found in leaf glandular trichomes that is currently being evaluated for its cytotoxicity towards human tumour cell lines.<br>References Bou, D., et al.: Molecules, 18, 9477 (2013); Freitas, J., et al.: Euphytica, 127, 275 (2002)<br></p>