Stereoselective photochemistry of methoxy chalcones in solution and their radical scavenging activity


YAYLI N. , UCUNCU O. , YASAR A. , GOK Y., Kucuk M. , KOLAYLI S.

TURKISH JOURNAL OF CHEMISTRY, cilt.28, ss.515-521, 2004 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 28 Konu: 4
  • Basım Tarihi: 2004
  • Dergi Adı: TURKISH JOURNAL OF CHEMISTRY
  • Sayfa Sayıları: ss.515-521

Özet

The photochemical dimerization of 3 known methoxy derivatives of chalcones, (2E)-1-(2-methoxy)phenyl-3-phenylpropen- 1-one (1), (2E)-1-(3-methoxy)phenyl-3-phenyl-propen-1-one (2), and (2E)-1-(4-methoxy) phenyl-3-phenylpropen-1-one (3), yielded 3 new delta-truxinic type dimers in solution: rel-(1beta,2alpha)-di-(2-methoxy)-benzoyl-rel-(3beta,4alpha)-diphenylcyclobutane (4), rel-(10,2a)-di-(3-methoxy)benzoyl-rel-(3beta,4alpha)-diphenylcyclobutane (5), and rel-(1beta,2alpha)-di-(4-methoxy)benzoyl-rel-(3beta,4alpha)-diphenylcyclobutane (6), stereoselectively. Precursor chalcones showed high superoxide radical scavenging activity although the dimers were inactive.