Patent · US Expired

Process for preparing N-substituted 3-β-aminonortropanes

US7321042B2 · kind B2 · utility

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7Claims

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Assignee

BOEHRINGER INGELHEIM PHARMA GMBH & CO. KG · DE

Inventors

Rainer Sobotta · Ingelheim am Rhein, DE
Hans-Peter Ignatow · Ingelheim am Rhein, DE

Key dates

Filing date	Oct 4, 2004
Grant date	Jan 22, 2008
Priority date	—
Expiry date	Feb 11, 2026

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61P43/00
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a process for preparing N-substituted 3β-aminonortropanes of formula Iwherein R1 has the meaning given in the claims, from the corresponding 3-oxonortropane or the corresponding 3α-aminonortropane, in which the latter is converted with an arylmethylamine or an arylaldehyde into the corresponding imines which are then tautomerised or isomerised and then hydrolysed.The invention also relates to the new compounds of formula Vwherein R1 and Ar have the meanings given in the claims.

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