12-MEMBERED HETEROCYCLIC LACTAM DERIVATIVE AND 8-MEMBERED HETEROCYCLIC COMPOUND

摘要

NEW MATERIAL:Compounds of formula I [R is H, alkyl, aralkyl; R2 is lower alkyl; X, Y are O, CH2, NCO2R3 (R3 is lower alkyl); n is 0, 1] and II (W is H, group of formula III). USE:An intermediate capable of being converted into medicines and agricultural chemicals or other useful physiologically active substances. PREPARATION:After the OH group of a compound of formula IV is, if necessary, changed into an active derivative group, the compound of formula IV is cyclized to prepare the compound of formula I wherein R1 is H.