论文部分内容阅读
新 neolignan ( 7'E ) -2',4,8-trihydroxy-3-methoxy-2,4'-epoxy-8,5'-neolign-7'-en-7-one ( 1 )从 Penthorum chinense Pursh 的整个植物被孤立,与 lupeol ( 2 )一起, betulinic 酸( 3 ), glyceryl monopalmitate ( 4 ), o-sitosterol ( 5 ),棕榈酸( 6 ), ursolic 酸(