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从大风子科植物爪哇脚骨脆的树干中分离得到11个已知三萜类化合物,经波谱解析及与文献对照方法,分别鉴定为木栓酮-2,3-内酯(1),木栓烷(2),表木栓醇(3),木栓酮(4),2α,3α,19α-三羟基-乌苏烷-12-烯-28-羧酸(5),2α,3β,19α-三羟基-乌苏烷-12-烯-28-羧酸(6),2α,3α,23-三羟基-乌苏烷-12-烯-28-羧酸(7),2α,3α,23-三羟基-齐墩果烷-12-烯-28-羧酸(8),2α,3α,19α,23-四羟基-乌苏烷-12-烯-28-羧酸(9),2α,3α,19α,23-四羟基-乌苏烷-12-烯-28-羧酸-28-O-β-D-葡萄糖酯(10),及3β,19α-双羟基-乌苏烷-12-烯-28-羧酸3-O-α-L-阿拉伯糖苷(11).其中化合物1为大风子科植物中稀有的裂环木栓烷三萜,所有化合物皆为首次从本植物中分离得到。
Eleven known triterpene compounds were isolated from the bark of Javanese bastardfoot, which is a major branch of the family, and identified by the methods of spectral analysis and literature comparison as woody ketone-2,3-lactone (1), wood (5), 2α, 3β, 3α, 3α, 19α-trihydroxy-ursan-12-ene- (6), 2α, 3α, 23-trihydroxy-sulphone-12-ene-28-carboxylic acid (7), 2α, 3α, Trihydroxy-oleanane-12-ene-28-carboxylic acid (8), 2α, 3α, 19α, 23-tetrahydroxy- , 3α, 19α, 23-tetrahydroxy-sulphone-12-ene-28-carboxylate-28-O-β-D-glucose ester (10), and 3β, 19α-bishydroxy- -ene-28-carboxylic acid 3-O-α-L-arabinoside (11), in which compound 1 is a rare tricyclic ring alkyl triterpene in the plants of Gynostemma, all of which were isolated from this plant for the first time get.