Hoechst Roussel Pharmaceuticals

Donna M Borek

Thomas B Lee

George E Lee

George S Wong

Keith E Goehring

This application relates to a new process for the preparation of a product of the formula ##STR1## wherein R, R.sup.1, R.sup.2, X and m are as defined within, which process comprises preparing treating a compound such as physostigmine to form eseroline which is then treated with an appropriate compound or its equivalent. Acetic acid is added to the reaction mixture after the formation of eseroline.

Preparation of physostigmine carbamate derivatives from physostigmine

A method of reducing a carbonyl containing acridine of the formula ##STR1## where n is 1, 2 or 3; X is hydrogen, loweralkyl, loweralkoxy, halogen, hydroxy, trifluoromethyl, or NR.sub.3 R.sub.4 where R.sub.3 and R.sub.4 are independently hydrogen or loweralkyl; R is hydrogen or loweralkyl and R.sub.1 is hydrogen, loweralkyl, diloweralkylaminoloweralkyl, arylloweralkyl, diarylloweralkyl, furylloweralkyl, thienylloweralkyl, oxygen-bridged arylloweralkyl, oxygen-bridged diarylloweralkyl, oxygen-bridged furylloweralkyl or oxygen-bridged thienylloweralkyl, is disclosed.

Growing community of inventors

New Providence, NJ, United States of America

Donna M Borek