| 摘要 |
Compounds of formula I <CHEM> in which: the R groups are independently hydrogen or lower alkyl; one of A and B is O or S and the other is -C(O)-, A being attached to the thiochroman ring at the 6 or 7-position; n is 0-5; and Z is H, an acid or acid derivative, an alcohol or alcohol derivative, acetal or acetal derivative or ketone or ketone derivative, or a pharmaceutically acceptable salt, have retinoid-like activity. |
