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Four New Triterpenes from Anchusa azurea var. azurea

✍ Scribed by Ayşe Kuruüzüm-Uz; Zuhal Güvenalp; Cavit Kazaz; Bekir Salih; L. Ömür Demirezer

Publisher
John Wiley and Sons
Year
2010
Tongue
German
Weight
178 KB
Volume
93
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Four new triterpene glycosides, named oleanazuroside 1 (1), oleanazuroside 2 (2), ursolazuroside 1 (3), and ursolazuroside 2 (4), together with the seven known compounds 5–11, were isolated from the MeOH extract of the aerial parts of Anchusa azurea Miller var. azurea. Their structures were elucidated by means of spectroscopic evidence (UV, IR, MALDI‐MS, and 1D‐ and 2D‐NMR). The radical‐scavenging activities against 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH) of the BuOH extract and of 8 and 10 were very strong (Table 5).

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