| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| —— | methyl 13-oxo-podocarp-8-en-18-oate | 105405-29-6 | C18H26O3 | 290.403 |
Abietic acid (1a) has been converted into the pregnane analogue steroid 10 via a sequence of transformations involving as key step the acetylene-cation cyclization of 9. Key words: abietic acid, pregnane steroids, acetylene-cation cyclization