Process for preparing optically active benzothiazepine compound, and intermediate therefor
申请人:TANABE SEIYAKU CO., LTD.
公开号:EP0826678A1
公开(公告)日:1998-03-04
Powdery aggregate of 2-phenyl-1,5-benzothiazepin-3,4(2H,5H)-dione compound:
wherein Ring A and Ring B are benzene ring having optionally substituent selected from lower alkyl, lower alkoxy and halogen, which is prepared by admixing solution of the compound (II) in polar organic solvent with solvent which does not substantially dissolve the compound (II) but is miscible with said polar organic solvent, and separating and collecting the resultant particles of the compound (II). Said aggregate of the compound (II) can be converted into optically active 3-hydroxy-2-phenyl-2,3-dihydro-1,5-benzothiazepin-4(5H)-one compounds (I) on industrial scale, which are useful as intermediate for various medicaments.
2-苯基-1,5-苯并硫氮杂卓-3,4(2H,5H)-二酮化合物的粉末状集合体:
将化合物(II)在极性有机溶剂中的溶液与基本上不溶解化合物(II)但能与所述极性有机溶剂混溶的溶剂混合,并分离和收集所得到的化合物(II)颗粒。上述化合物(II)的集合体可在工业规模上转化为具有光学活性的 3-羟基-2-苯基-2,3-二氢-1,5-苯并硫氮杂卓-4(5H)-酮化合物(I),这些化合物可用作各种药物的中间体。