Revised structure and synthesis of piperolein acids, guineensine and wisanine from Piper guineense
作者:S.K. Okwute、J.I. Okogun、D.A. Okorie
DOI:10.1016/s0040-4020(01)83507-9
日期:1984.1
The structures of piperolein acids guineensine and wisanine have been confirmed by synthesis, UV irradiation of trans piperolein B acid ester gave the cis-isomer reported in the literature as the trans-isomer. The trans-2, trans-4 ethylenic bonds in guineensine and wisanine were introduced by reacting piperolein B aldehyde and 2-methoxy piperonal with the appropriate Wittig or Reformatsky reagent.
合成已确认了胡椒树酸的胍胺酸和维沙宁的结构,反式哌啶B酸酯的UV辐射产生了文献中报道的顺式-异构体,为反式-异构体。通过使哌啶B醛和2-甲氧基胡椒醛与适当的Wittig或Reformatsky试剂反应,来引入胍基胺和维桑宁中的反式-2,反式-4烯键。