Page 1. Tetrahedron Lcmrs, Vo1.32. No.10. pp 1379-1380. 1991 Printed in Great Britain ... The acylated compound (2, E=PhCHzOCO) could be obtained by introducing the lactam enolate derived from (1) into an excess of benzyl chloroformate in 10% yield. E 1. LDA -0 2. E ...