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Three New Peroxy Triterpene Lactones from Pseudolarix kaempferi

✍ Scribed by Jun-Ming Tan; Yi-Hua Qiu; Xin-Qi Tan; Chang-Heng Tan

Book ID
102258551
Publisher
John Wiley and Sons
Year
2011
Tongue
German
Weight
175 KB
Volume
94
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Three new 3(4),9(10)‐disecocycloartane peroxy triterpene lactones, named as pseudolarolides Q~2~, T~1~, and T~2~ (1–3, resp.), along with five known triterpenoids, were isolated from the seeds of Pseudolarix kaempferi Gord. Their structures were elucidated to be (9__R__,10__R__,16__R__,23__R__,25__R__)‐16,23‐epoxy‐9,10‐epidioxy‐3,4:9,10‐disecocycloart‐1(2)‐ene‐3,4:26,23‐diolide (1), (1__R__,9__R__,10__S__,16__R__,23__S__,25__R__)‐1,4:16,23‐diepoxy‐9,10‐epidioxy‐3,4;9,10‐disecocycloartan‐26(23)‐olid‐3‐oic acid methyl ester (2), and (1__R__,9__R__,10__S__,16__R__,23__R__,25__R__)‐1,4:16,23‐diepoxy‐9,10‐epidioxy‐3,4;9,10‐disecocycloartan‐26(23)‐olid‐3‐oic acid methyl ester (3) on the basis of spectroscopic analysis.

📜 SIMILAR VOLUMES

Pseudolarolides O and P, Two Novel Trite
Pseudolarolides O and P, Two Novel Triterpene Dilactones from Pseudolarix kaempferi
✍ Guo-Fu Chen; Chang-Heng Tan; Zhu-Lian Li; Shan-Hao Jiang; Da-Yuan Zhu 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 German ⚖ 106 KB

## Abstract Pseudolarolides O (**1**) and P (**2**), two novel triterpenoids with a cycloartane‐type framework, were isolated from the seeds of __Pseudolarix kaempferi__ Gord. (Pinaceae). Their structures were elucidated as (16__R__,23__S__,25__R__)‐16,23‐epoxy‐3,4 : 9,10‐disecocycloartan‐1(10),9(1