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Two Novel Triterpenes from the Leaves of Ficus microcarpa

✍ Scribed by Yueh-Hsiung Kuo; Huan-You Lin

Publisher
John Wiley and Sons
Year
2004
Tongue
German
Weight
100 KB
Volume
87
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Two novel triterpenes, 29(20β†’19)abeolupane‐3,20‐dione (4) and 19,20‐secoursane‐3,19,20‐trione (5), besides (3__Ξ²__)‐3‐hydroxy‐29(20β†’19)abeolupan‐20‐one (2), lupenone, and α‐amyrone (6), were isolated from the leaves of Ficus microcarpa and were characterized by spectroscopic means, including 2D‐NMR techniques and chemical methods. Compound 4 is the second derivative having the 29(20β†’19)abeolupane skeleton, and 5 is a novel skeleton. A biosynthetic pathway to 5 is proposed (Scheme).

πŸ“œ SIMILAR VOLUMES

Ficuschlorins A – D, Lactone Chlorins fr
Ficuschlorins A – D, Lactone Chlorins from the Leaves of Ficus microcarpa
✍ Huan-You Lin; Hsi-Lin Chiu; Yu-Hsuang Lan; Chih-Ying Tzeng; Tzong-Huei Lee; Chin πŸ“‚ Article πŸ“… 2011 πŸ› John Wiley and Sons 🌐 English βš– 185 KB πŸ‘ 1 views

## Abstract Four new lactone chlorins, ficuschlorins A – D (**1**–**4**, resp.), and six known pheophytins were isolated from the leaves of __Ficus microcarpa.__ The structures of these compounds were determined by 1D‐ and 2D‐NMR spectroscopy, and other techniques. New natural pheophytins were rare