Patent · US Expired

Tetrazole intermediates to antihypertensive compounds

US4874867A · kind A · utility

26Cited by

2References

10Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Paul E. Aldrich · Wilmington, US
John J. V. Duncia · Newark, US
Michael E. Pierce · Folsom, US

Key dates

Filing date	Nov 23, 1988
Grant date	Oct 17, 1989
Priority date	—
Expiry date	Nov 23, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07F7/2284
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Tetrazole intermediates useful to prepare antihypertensive compounds described in coassigned application U.S. Ser. No. 884,920, filed July 11, 1986, are described, these tetrazoles have the formula: ##STR1## wherein X.sup.1 and X.sup.2 are as described in the specification.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.