Cis-shegansu B (5) is a cis isomer of shegansu B. (+)-bisisorhapontigenin A (6) is isolated as a natural product for the first time.

 
  • cis-shegansu B(5)为二聚体射干素B的顺式异构体; (+)-Bisisorhapontigenin A(6)为首次以天然产物形式得到的异丹叶大黄素二聚体;
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