中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 5,6-epoxycholesterol | 55700-78-2 | C27H46O2 | 402.661 |
—— | 5,6-β-epoxycholesteryl acetate | 1256-31-1 | C29H48O3 | 444.698 |
—— | 3β-acetoxy-5,6-epoxycholestane | —— | C29H48O3 | 444.698 |
—— | 5β,6β-epoxy-cholestan-3β-ol benzoate | 6557-19-3 | C34H50O3 | 506.769 |
—— | 5α-cholestane-3β,5,6β-triol triacetate | 2572-55-6 | C33H54O6 | 546.788 |
胆甾烷-3,5,6-三醇 | cholestanetriol | 1253-84-5 | C27H48O3 | 420.676 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 5,6-β-epoxycholesteryl acetate | 1256-31-1 | C29H48O3 | 444.698 |
—— | 5α-methoxycholestane-3β,6β-diol | 2515-22-2 | C28H50O3 | 434.703 |
—— | 5,6β-epoxy-5β-cholestan-3-one | 56436-51-2 | C27H44O2 | 400.645 |
—— | 5-methoxy-5α-cholestane-3β,6β-diol 3-acetate | 19317-73-8 | C30H52O4 | 476.74 |
—— | 5β,6β-epoxy-cholestan-3β-ol benzoate | 6557-19-3 | C34H50O3 | 506.769 |
胆甾烷-3,5,6-三醇 | cholestanetriol | 1253-84-5 | C27H48O3 | 420.676 |
Syntheses of 5-hydroxy-5α- and 5β-cholestan-6-one (11 and 13) and their 3β-acetoxy (10 and 21) and 3β-benzyloxy derivatives (12 and 19) are described, as are syntheses of the 7α-deutero derivatives of 10 and 21. Related investigations of the syntheses of the 5-methoxy and 5-methyl analogues of these compounds are also discussed. Treatment of 12 with potassium tert-butoxide has been shown to give 5-hydroxy-5β-cholest-3-en-6-one (14) and its Δ2 isomer 15. Reaction of 6-nitrocholesteryl acetate (50) with lithium dimethylcuprate gives 3α,5-cyclo-5α-cholestan-6-one (E)-oxime (51) as the major product.
High chemoselectivity for the C5C6epoxidation of cholesterol derivatives without protecting other oxidizable functional groups was achieved on a newly designed molecularly imprinted Ru–porphyrin catalyst using a SiO2-support.