abstract |
A compound of the formulawherein R is hydrogen or hydroxy, each R1 is ethyl, propyl, butyl, isopropyl or t-butyl, X is =CH2, or when R is hydroxy, X is hydrogen or =CH2,and A is -C=C-,or-CH2-CH2-.These compounds are useful for the treatment of hyperproliferative disorders, skin diseases, and sebaceous gland diseases. |