共 31 条
- [4] BERGSTROM RG, 1980, CHEM ETHERS CROWN ET, pCH20
- [6] STEROIDAL CYCLIC KETALS - PREPARATION OF STEROIDAL DELTA-4-3-ETHYLENEKETALS [J]. EXPERIENTIA, 1962, 18 (07): : 309 - &
- [9] Daignault R.A., 1973, ORG SYNTH, V5, P303
- [10] DAUBEN WG, 1986, SYNTHESIS-STUTTGART, P532