Two novel triterpenes, acutaxylines A (1) and B (2) consisting of a cyclopentenone side chain at C-17 and an oxepan-2-ol, were isolated from the leaves of Dysoxylum acutangulum. The relative stereochemistry of 1 and 2 was determined by NOESY correlations. Acutaxyline B showed moderate cytotoxicity a
Querspicatins A and B, two pentacyclic triterpenes from Quercus spicata
โ Scribed by Sunil K. Talapatra; Kedar Man Shrestha; Milan K. Pal; Amit Basak; Bani Talapatra
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 494 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0031-9422
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Two new sulfated triterpene glycosides, philinopsides A (1) and B (2), were isolated from the sea cucumber Pentacta quadrangularis. Their structures were established by extensive spectral analysis (2D-NMR and MS) and chemical evidence. Philinopside A (1) and B (2) showed significant cytotoxicity (ED