Patent · US Expired

Process for the preparation of 4-[1-hydroxy -4-[4-(hydroxydiphenylmethly)-1-piperidinyl]-butyl]-&agr;, &agr;-dimethylbenzeneacetic acid

US6815549B2 · kind B2 · utility

1Cited by

1References

11Claims

0Family size

Assignee

Dinamite Dipharma S.p.A. · IT

Inventors

Graziano Castaldi · Briona, IT
Giuseppe Barreca · Milano, IT
Domenico Magrone · Milano, IT

Key dates

Filing date	May 16, 2002
Grant date	Nov 9, 2004
Priority date	—
Expiry date	May 16, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D211/22
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for the preparation of 4-[1-hydroxy-4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]-butyl]-&agr;,&agr;-dimethylbenzeneacetic acid (Fexofenadine) of formula

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