Die Pharmazie

Thieno (2', 3': 3, 4) pyrazolo (1, 5-a) pyrimidines and-triazines: synthesis of a novel ring system

D Briel

Index: Briel Pharmazie, 1995 , vol. 50, # 10 p. 675 - 678

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Citation Number: 6

Abstract

The novel tricyclic ring systems 14 can be prepared by reaction of thienopyrazoles 5 with 1, 3-dielectrophiles, such as acetylacetone, dibenzoylmethane or 1, 2, 4-dithiazole 8. An other synthetic route for the preparation of the tricyclic systems, based on the pyrazoloazines 13, was investigated. The compounds 5 and 14 were tested for antiulcer activity.