... Volume 27, Issue 2, 1971, Pages 487-499. ... Download full text in PDF. Tetrahedron Vol 27 pp 437 to 499 Pergamon Press 197] Printed 10 Great Britain THIOPYRIMIDINESI ETUDE DE LA THIO (3.2-| PYRIMIDINE ET DE ... (Analyse N,N38 Cale: C, 47-66 ; H, 3-33, N, 27-79 ; S ...