Biosynthetic, studies of marine lipids. 21. Experimental demonstration of a biosynthetic interconversion of cyclopropene sterols in the sponge calyx nicaeensis
作者:George A. Doss、Christian Margot、Guido Sodano、Carl Djerassi
DOI:10.1016/s0040-4039(00)82262-5
日期:——
In vivo isomerization of cyclopropenes has been demonstrated for the first time through feeding experiments of appropriately labeled cyclopropene sterols (1c-4c) in the sponge Calyx nicaeensis.
体内的环丙烯异构化首次通过在海绵花萼中适当标记的环丙烯固醇(1c-4c)的饲喂实验得以证明。
Acid-catalyzed and photochemical isomerization of steroidal cyclopropenes
作者:Toshihiro Itoh、Carl Djerassi
DOI:10.1021/ja00351a047
日期:1983.6
MARGOT, CHRISTIAN;CATALAN, CESAR A. N.;PROUDFOOT, JOHN R.;SODANO, GUIDO;S+, J. CHEM. SOC. CHEM. COMMUN.,(1987) N 19, 1441-1442
作者:MARGOT, CHRISTIAN、CATALAN, CESAR A. N.、PROUDFOOT, JOHN R.、SODANO, GUIDO、S+
DOI:——
日期:——
Isolation, Structure Determination and Synthesis of New Acetylenic Steroids from the SpongeCalyx nicaaensis
Two acetylenic steroids, cholest-5-en-23-yn-3β-ol (5) and 26,27-dinorcholest-5-en-23-yn-3β-ol (3), and another unsaturated steroidalcohol, stigmasta-5,23-dien-3β-ol (7), were isolated from the sponge Calyx nicaaensis. The structures of these two acetylenic steroids were established by synthesis. Several attempts to synthesize the marine steroids alcohol calysterol (1), with a cyclopropene-containing