SYNTHESIS OF TRIAROMATIC STEROID HYDROCARBONS METHYLATED AT POSITION-2, POSITION-3 OR POSITION-6 - MOLECULAR FOSSILS OF YET UNKNOWN BIOLOGICAL ORIGIN

[摘要] C-21-29 triaromatic steroid hydrocarbons bearing a methyl group at unusual positions 2, 3 or 6 have been synthesized from pregnenolone, cholesterol or stigmasterol via stera-3,5-dienes. Their occurrence in various sedimentary rocks and petroleums suggests the presence of yet unknown biological precursors.

[发布日期] 1994-02-07