Abstract:
CONTENTS I. Introduction 311 II. Five-membered heterocycles with one heteroatom 312 III. Five-membered heterocycles with two heteroatoms 314 IV. Five-membered heterocycles with three heteroatoms 319 V. Six-membered heterocycles with one heteroatom 320 VI. Six-membered heterocycles with two heteroatoms 320 VII. Condensed heterocyclic systems with several heteroatoms 322