C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 451/02 (2006.01) C07K 5/083 (2006.01)
Patent
CA 2331029
The present invention relates to a process for synthesizing an anhydroecgonine derivative without using cocaine as a starting material, and a process for synthesizing a phenyltropane derivative by using said anhydroecgonine derivative as an intermediate for the synthesis. The present invention provides a process for synthesizing an anhydroecgonine derivative which comprises reacting a cycloheptatriene derivative represented by the formula (1): (see formula 1) with a primary amine, a salt thereof or ammonia in the presence of a base to obtain an anhydroecgonine derivative, and a process for synthesizing a phenyl- tropane derivative by using said anhydroecgonine derivative. In the formula (1), n is an integer of 0 or 1; and R1 is a cyano group in the case of n being 0, and R1 is selected from an alkyl group and an aralkyl group in the case of n being 1.
Itoh Osamu
Okano Kyoko
Marks & Clerk
Nihon Medi-Physics Co. Ltd.
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