Four new triterpenes from Anchusa azurea var. azurea


KURUUZUM-UZ A., GÜVENALP Z., KAZAZ C., SALİH B., DEMİREZER L. Ö.

Helvetica Chimica Acta, vol.93, no.3, pp.457-465, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 93 Issue: 3
  • Publication Date: 2010
  • Doi Number: 10.1002/hlca.200900230
  • Journal Name: Helvetica Chimica Acta
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.457-465
  • Hacettepe University Affiliated: Yes

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). © 2010 Verlag Helvetica Chimica Acta AG.