番石榴果实中三萜类成分研究

Triterpenoid constituents in fruits of Psidum guajava

目的:研究番石榴果实的化学成分。方法:采用各种色谱技术分离,波谱法进行结构鉴定。结果:从番石榴果实中分离得到9个乌苏烷型三萜类化合物:乌苏酸(1),1β,3β-二羟基乌苏烷-12烯-28-酸(2),2α,3β-二羟基-12-烯-28-乌苏酸(3),3β,19α-二羟基-12-烯-28-乌苏酸(4),19α-羟基-12-烯-28-乌苏酸-3-O-α-L-阿拉伯吡喃糖(5),3β,23-二羟基-12-烯-28-乌苏酸(6),3β,19α,23-三羟基-12-烯-28-乌苏酸(7),2α,3β,19α,23-四羟基-12-烯-28-乌苏酸(8),3α,19α,23,24-四羟基-12-烯-28-乌苏酸(9)。结论:化合物2,5~9为首次在该植物中分离得到。

The chemical constituents from the fruit of Psidium guajava were investigated.Nine triterpenoids,ursolic acid(1),1β,3β-dihydroxyurs-12-en-28-oic acid(2),2α,3β-dihydroxyurs-12-en-28-oic acid(3),3β,19α-dihydroxyurs-12en-28-oic acid(4),19α-hydroxylurs-12-en-28-oic acid-3-O-α-L-arabinopyranoside(5),3β,23-dihydroxy urs-12-en-28-oic acid(6),3β,19α,23β-trihydroxylurs-12-en-28-oic acid(7),2α,3β,19α,23β-tetrahydroxyurs-12-en-28-oic acid(8),3α,19α,23,24-tetrahydroxyurs-12-en-28-oic acid(9) were isolated by means of c...