中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | ethyl 3-(bicyclo<2.2.1>hept-5-en-2-yl)-3-oxo-2-methyl-propanoate | 144363-51-9 | C13H18O3 | 222.284 |
A Pechmann condensation of resorcinol, or resorcinol monomethyl ether with ethyl t-7a-methyl- 1,5-dioxo-r-3a,4,5,6,7,7a-hexahydroindan-c-4-carboxylate (10b) gave 3-hydroxy-6-oxaoestra- 1,3,5(10),8(9)-tetraene-7,17-dione (3a), or the corresponding 3-methoxy compound (3b), respectively. Reduction of 3-hydroxy-6-oxaoestra-1,3,5(10),8(9)-tetraene-7,17-dione (3a) with sodium borohydride gave 3,17β-dihydroxy-6-oxaoestra-1,3,5(10),8(9)-tetraen-7-one (11). Compounds (3a) and (11) were tested for oestrogenic activity.