Synthesis, and analgesic and antiparkinsonian activities of thiopyrimidine, pyrane, pyrazoline, and thiazolopyrimidine derivatives from 2-chloro-6-ethoxy-4-acetylpyridine - Amr, A.E.-G.E.; Maigali, S S; Abdulla, M M (Monatshefte für Chemie-Chemical Monthly, 2008)