00385nam a2200109Ia 4500008004100000022001400041040001100055100001900066245012800085260004500213300001700258251112s9999||||xx |||||||||||||| ||und||  a0040-4039  aCNCLSA  aDr. T. Stephen 0aTetrahedron LettersbThe International Journal For the Rapid Publication of Preliminary Communications in Organic Chemistry  cNovember, 1979bpergamon pressaNew York  aP. 4335-5078