00381nam a2200109Ia 4500008004100000022001400041040001100055100001900066245012800085260004100213300001700254251112s9999||||xx |||||||||||||| ||und||  a0040-4039  aCNCLSA  aDr. T. Stephen 0aTetrahedron LettersbThe International Journal For the Rapid Publication of Preliminary Communications in Organic Chemistry  cJuly, 1977bpergamon pressaNew York  aP. 2461-2828