FIELD: organic chemistry, vitamins, medicine.
SUBSTANCE: invention describes compounds of the formula (I):
wherein R1 means hydrogen atom; R2 means (C1-C4)-alkyl; or R1 means (C1-C4)-alkyl and R2 means hydrogen atom; A means group CH2-CH2; R3 means (C1-C4)-alkyl, hydroxy-(C1-C4)-alkyl or fluoro-(C1-C4)-alkyl; R4 means (C1-C4)-alkyl, hydroxy-(C1-C4)-alkyl or fluoro-(C1-C4)-alkyl. Compounds are useful for treatment of breast cancer, prostate cancer, myeloid leucosis, prostate benign tumor, alopecia and osteoporosis.
EFFECT: valuable medicinal properties of analogs.
4 cl
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