Triterpenoids from Eucalyptus perriniana cultured cells
作者:Tsutomu Furuya、Yutaka Orihara、Chisato Hayashi
DOI:10.1016/s0031-9422(00)84771-8
日期:1987.1
Abstract Eight triterpenes were isolated from the methanol extracts of Eucalyptusperrinianaculturedcells as their methyl esters. The structures were elucidated by spectral data to be oleanolic acid, ursolic acid, maslinic acid, 2α-hydroxyursolic acid, hederagenin, 23-hydroxyursolic acid, arjunolic acid and asiatic acid.
Bartogenic acid, a new triterpene acid from Barringtonia speciosa
作者:G.S.R.Subba Rao、S. Prasanna、V.P.Sashi Kumar、Gopal R. Mallavarapu
DOI:10.1016/0031-9422(81)85119-9
日期:1981.1
A new triterpeneacid, was isolated from the fruits of Barringtoniaspeciosa. Its structure was established as 2α,3β,19α-trihydroxyolean-12-ene-24,28-dioic acidfrom chemical and spectroscopic data and confirmed by its conversion into methyl sericiale.
Pericarp saponins of Akebia quinata Decne. II. Arjunolic and norarjunolic acids, and their glycosides.
作者:RYUICHI HIGUCHI、TOSHIO KAWASAKI
DOI:10.1248/cpb.24.1314
日期:——
The structures of two free triterpenoids, Y and Z, and two saponins, PH and PJ1, isolated from the fresh pericarps of Akebia quinata DECNE. (Lardizabalaceae) were investigated. Y, mp 317-320°, [α]D+62°, was identified with arjunolic acid (I), while Z, mp 303-305°, [α]D+75°, was assigned the structure 20 (29)-dehydro-30-norarjunolic acid (XII) and conventionally named norarjunolic acid. PH, mp 207-210°(decomp.), [α]D+3°, was defined as 28-O-α-L-rha·pyr-(1→4)-β-D-glc·pyr-(1→6)-β-D-glucopyranside (XIX) of XII, and PJ1 was characterized as 28-O-β-D-xyl·pyr-(1→3)-α-L-rha·pyr-(1→4)-β-D-glc·pyr-(1→6)-β-D-glucopyranoside (XXIV') of I. XXIV' is the first arjunolic acid oligoglycoside, and XII and XIX are second to eupteleogenin and eupteleoside, respectively, as a naturally occurring noroleanane derivative and its glycoside.
研究了从 Akebia quinata DECNE.(Lardizabalaceae)新鲜果皮中分离出的两种游离三萜类化合物 Y 和 Z 以及两种皂甙 PH 和 PJ1 的结构。(对从 Akebia quinata DECNE.Y,mp 317-320°,[α]D+62°,被确定为阿琼酸(I);Z,mp 303-305°,[α]D+75°,被确定为 20 (29)-dehydro-30-norarjunolic acid (XII),传统命名为 norarjunolic acid。PH,熔点 207-210°(decomp.PH,[α]D+3°,定义为 XII 的 28-O-α-L-rha-pyr-(1→4)-β-D-glc-pyr-(1→6)-β-D-吡喃葡萄糖苷(XIX),PJ1 定性为 I 的 28-O-β-D-xyl-pyr-(1→3)-α-L-rha-pyr-(1→4)-β-D-glc-pyr-(1→6)-β-D-吡喃葡萄糖苷(XXIV')。XXIV' 是第一种阿琼酸低聚糖苷,而 XII 和 XIX 分别是仅次于 eupteleogenin 和 eupteleoside 的天然存在的去甲乌头环衍生物及其糖苷。
Rao, G. S. R. Subba; Prasanna, S.; Kumar, V. P. Sashi, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1986, vol. 25, p. 113 - 122
作者:Rao, G. S. R. Subba、Prasanna, S.、Kumar, V. P. Sashi、Yadagiri, Bathini