中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
黄体酮环20-(乙烯缩醛) | 20-ethylenedioxy-4-pregnen-3-one | 978-98-3 | C23H34O3 | 358.521 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 3α-Hydroxy-20-ethylendioxy-5β-pregnan | 18000-89-0 | C23H38O3 | 362.553 |
—— | pregn-4-ene-3,20-dione cyclic 20-(ethylene acetal) 3-oxime | 1185296-44-9 | C23H35NO3 | 373.536 |
We have prepared 20-oxo-5α- and 20-oxo-5β-pregnane-3-carboxylic acids by palladium catalyzed alkoxycarbonylation using triflate and nonaflate as the leaving groups in this substitution reaction. The activity of the synthesized compounds was studied in cultured rat hippocampal neurons under voltage-clamp conditions. The 5β-carboxylic acid derivatives were found to diminish NMDA-induced responses, whereas the 5α-derivative potentiated the response.