中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 5α-cholestane-3β,4β-diol 4-monoacetate | 97133-96-5 | C29H50O3 | 446.714 |
The addition of hypobromous acid to 4-cholesten-3β-yl acetate (1) has been found to result in the formation of a significant amount of 4β-bromo-5α-cholestane-3β,5-diol 3-acetate (3) as well as of 5-bromo-5α-choIestane-3β,4β-diol 4-acetate (2a). Evidence is presented in support of the structure proposed for the former and confirmation of the structure of the latter, about which there is disagreement, is adduced. The conversion of 2a to 4-cholestene-3β,19-diol 3-acetate (9) by treatment with lead tetraacetate and subsequent opening of the 4β,19-oxide ring is described.