| abstract |
Compounds having excellent immunosuppressive activity and / or antiallergic activity and useful as pharmaceuticals are represented by formula (I): (Wherein, R 1a , R 1b , R 1c and R 1d are each independently hydrogen, lower alkyl, lower alkenyl, lower alkynyl, lower alkylsulfonyl, cycloalkyl or the like, and R 4 to R 15 are hydrogen, halogen, , Hydroxy, lower alkyl, lower alkoxy, carboxy, lower alkoxycarbonyl, amino, nitro, lower alkylsulfonyl, lower alkylsulfonyloxy, etc.). |