| 摘要 |
Compounds of the formulawhereinR1 is hydrogen or an alkyl group;R2 is hydrogen or an alkyl group; orR1, R2 and C20 together are cyclopropyl;R3 is alkyl, hydroxy-alkyl or fluoroalkyl; andR4 is alkyl, hydroxy-alkyl or fluoroalkyl which are useful in the treatment of breast cancer, prostate cancer, myeloid leukemia benign prostate growth, baldness and osteoporosis. |
