Patent · US Expired

(3,4,7,8,9,10-hexahydro-6,10-dioxo-6H pyridazino[1,2-A] [1,2] diazepine-1-carboxylic acid derivatives

US6258947A · kind A · utility

0Cited by

2References

11Claims

0Family size

Assignee

AVENTIS PHARMA S.A. · FR

Inventors

Francis Brion · Gagny, FR
Veronique Croco · Dijon, FR
Patrick Roussel · Thiais, FR

Key dates

Filing date	Apr 22, 1999
Grant date	Jul 10, 2001
Priority date	—
Expiry date	Apr 22, 2019

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07K5/06139
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

A compound of the formula ##STR1## wherein R is alkyl or aralkyl of up to 18 carbon atoms, the amine function being optionally protected are used to prepare compounds of the formula ##STR2## in which R retains its previous meaning and the amine is optionally protected.

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