00379nam a2200109Ia 4500008004100000022001400041040001100055100002600066245012600092260003500218300001600253251112s9999||||xx |||||||||||||| ||und||  a0040-4039  aCNCLSA  aProf. A. R. Katritzky 0aTetrahedron LettersbThe International Organ For the Rapid Publication of Preliminary Communications in Organic Chemistry  c1978bpergamon pressaNew York  aP. 709-1524