Process for preparing [S-(R*,S*)]-&bgr;-[[[1-[1-oxo-3(4-piperidinyl)propyl]-3-piperidinyl]carbonyl]amino]-3-pyridinepropanoic acid and derivatives

US6515130B1 · kind B1 · utility

Inventors

• Judith Cohen · North Wales, US
• Michael Justus · Beloit, US
• Cynthia Maryanoff · Robinson Township, US
• Armin Rossler · Tengen, DE
• Fridtjof Schröder · Hettlingen, CH
• Kirk L. Sorgi · Doylestown, US
• Frank J. Villani · Perkasie, US
• Christian Weh · Stadtilm, DE

Key dates

• Filing date: Mar 21, 2000
• Grant date: Feb 4, 2003
• Expiry date: Mar 21, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61P9/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing a compound of formula I wherein R1 and R2 are independently selected from the group consisting of hydrogen, lower alkyl and halogen