Fatty Acids and Lypidic Derivatives

<p>Stability Hygroscopic<br>Applications A derivative of Deoxycholic acid (DC); the bile acid nor-DC showed considerable and continuing efflux into the perfusate; this involved mostly the unchanged acid. Nor-DC was not amidated but was metabolized to mostly ester glucuronides and hydroxylated derivatives.<br>References Haslewood, G., et al.: Biochem. J., 62, 637 (1956), Clayton, L. M., et al.: J. Pharmacol. Exp. Therap., 248, 1130 (1989), Aggarwal, S., et al.: Steroids, 57, 107 (1992), Batta, A., et al.: J. Lipid Res., 33, 1403 (1992),<br></p>

<p>Applications Propoxyphenyl-thiosildenafil is an analogue of Thiosildenafil (T371500). Propoxyphenyl-thiosildenafil has been used in the preparation of novel pyrazolopyrimidinethiones as PDE5 inhibitors for treating erectile dysfunction.<br></p>

<p>Applications Labelled Ezetimibe (E975000), an antihyperlipoproteinemic. A Cholesterol absorption inhibitor.<br>References van Heek, M., at al.: J. Pharmacol. Exp. Ther., 283, 157 (1997), van Heek, M., at al.: Brit. J. Pharmacol., 129, 1748 (2000)<br></p>

<p>Stability Hygroscopic<br>Applications (3’S,3R,4S)-Desfluoro Ezetimibe is an impurity of the cholesterol absorption inhibitor Ezetimibe (E975000).<br>References Gajjar, A.K., Open. Con. Proceed. J., 2, 108 (2011);<br></p>

<p>Applications Sodium Ursodeoxycholate<br></p>

<p>Applications An intermediate and impurity in the synthesis of Tadalafil (T004500).<br>References Carrier, S., et al.: Can. J. Urol., 10(1), 12 (2003),<br></p>

<p>Applications Labelled Pyruvic acid (P998900). Intermediate in sugar metabolism and in enzymatic carbohydrate degradation (alcoholic fermentation) where it is converted to acetaldehyde and CO2 by carboxylase. In muscle, Pyruvic acid (derived from glycogen) is reduced to lactic acid during exertion, which is reoxidized and partially retransformed to glycogen during rest. The liver can convert Pyruvic acid to alanine by amination. A diagnostic agent for Parkinson disease.<br>References Wenzel, A., et al.: J. Neurosci., 21, 53 (2001), Martinez., et al.: Development, 6, 851 (2002), Nakayama, K., et al.: J. Biochem., 146, 757 (2009), Tanaka, T., et al.: J. Pharmacol. Sci., 109, 24 (2009),<br></p>