Four New Triterpenes from Anchusa azurea var. azurea


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

HELVETICA CHIMICA ACTA, cilt.93, ss.457-465, 2010 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 93 Konu: 3
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1002/hlca.200900230
  • Dergi Adı: HELVETICA CHIMICA ACTA
  • Sayfa Sayıları: ss.457-465

Özet

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 azuren 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).