New spirobenzofuran-lactam derivatives, useful for treating e.g. thromboembolic diseases by inhibition of platelet activation inhibitor-1, also new Stachybotris strain that produces them

摘要

Spirobenzofuran-lactam derivatives (I) and their salts are new. Spirobenzofuran-lactam derivatives of formula (I) and their salts are new. R1 and R2 = hydrogen, 1-6C alkyl, 2-6C alkenyl or alkynyl, 5-14 C aryl, all optionally substituted by 1-3 of hydroxy, oxo, 1-6C alkoxy, 2-6C alkenyloxy, 5-14C aryloxy, 1-6C alkylamino, 2-6C alkenylamino, 1-6C alkylcarbonylamino, 5-14C arylcarbonylamino, amino or halo; R3 = hydroxy, OR1 or NHR1; and R4 = hydrogen, 1-6C alkyl, 2-6C alkenyl, 5-14C aryl or 1-6C alkyl(5-14C) aryl. Independent claims are also included for the following: (1) preparing (I) by fermenting Stachybotris atra ST 002348 (DSM 14952); and (2) Stachybotris atra ST 002348 (DSM 14952) as new.