Patent ID: 11897901
Assignee: KING FAISAL UNIVERSITY
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  A | IPC A  C

Claim 5:
6. The method of making the 6-amino-8,9-di(4-methoxyphenyl)-2-oxo-3,9-dihydro-2H-[1,3]thiazolo[5′,4′:5,6]pyrano[2,3-b]pyridine-7-carbonitrile compound of claim 5, wherein the precipitate is collected by filtration, washed several times with ethanol, dried, and recrystallized from the ethanol to obtain the 6-amino-8,9-di(4-methoxyphenyl)-2-oxo-3,9-dihydro-2H-[1,3]thiazolo[5′,4′:5,6]pyrano[2,3-b]pyridine-7-carbonitrile compound.