Disclosed are processes for resolving chiral (2S) and (2R) benzopyrans, racemizing benzopyrans, and recycling racemized benzopyrans to increase yield of a desired enantiomer to provide purified or substantially purified bicyclic amino substituted benzopyran derivatives. Such benzopyran derivatives are preferably chromans which can be coupled with benzoyl derivatives via an amide bond to produce potent platelet aggregation inhibitors.
公开了用于解决手性(2S)和(2R)苯并
吡喃、使苯并
吡喃消旋以及回收消旋苯并
吡喃的方法,以提高所需对映体的产量,从而提供纯化或基本纯化的双环
氨基取代苯并
吡喃衍
生物。这些苯并
吡喃衍
生物最好是色苷,可以通过酰苯衍
生物通过酰胺键耦合,生产出强效的血小板聚集
抑制剂。