Synthesis and antifungal activity of novel pyrano [2',3',:4,5]thiazolo- [2,3-b]quinazolines, pyrido[2',3':4',5']thiazolo[2,3-b]quin-azolines and pyrazolo[2',3':4',5']thiazolo [2,3-b]quinazo-lines - Abdel-Gawad, SM; El-Gaby, MSA; Ghorab, MM (IL Farmco., 2000)