Patent · US Active

Process for the preparation of quaternary N-alkyl morphinan alkaloid salts

US8669366B2 · kind B2 · utility

8Cited by

30References

5Claims

0Family size

Assignee

MALLINCKRODT LLC · US

Inventors

Peter X. Wang · Chesterfield, US
Gary L. Cantrell · Glen Carbon, US
Robert E. Halvachs · Belleville, US
Kevin R. Roesch · Webster Groves, US
Henry J. Buehler · Chesterfield, US
Joseph P. Haar, Jr. · Edwardsville, US

Key dates

Filing date	Mar 6, 2008
Grant date	Mar 11, 2014
Priority date	—
Expiry date	Oct 10, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/582
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

An improved process for the N-alkylation of tertiary morphinan alkaloid bases to form the corresponding quaternary morphinan alkaloid derivatives.

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