00377nam a2200109Ia 4500008004100000040001100041100001900052245012800071260004100199300001700240300001000257251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aDr. T. Stephen 0aTetrahedron LettersbThe International Journal For the Rapid Publication of Preliminary Communications in Organic Chemistry  cJuly, 1978bpergamon pressaNew York  aP. 2969-3810  bV. 75