Antibiotics having immunosuppressive activity, delaminomycins and processes for the production of the same

摘要

PCT No. PCT/JP93/00845 Sec. 371 Date Jan. 20, 1995 Sec. 102(e) Date Jan. 20, 1995 PCT Filed Jun. 22, 1993 PCT Pub. No. WO94/00430 PCT Pub. Date Jun. 1, 1994.As new antibiotics are obtained delaminomycins A, B and C having a formula (I) or (I') shown below, or salts thereof. Delaminomycins preferentially inhibit T cells and are useful as immunosuppressants, antineoplastic agents and antibacterial agents. <IMAGE> (I) <IMAGE> (I') wherein X is a hydroxyl group for delaminomycin A, a methoxy group for delaminomycin B and a hydrogen atom for delaminomycin C.