1'-Methyl-6,7-dihydro-2H,5H-spiro[furo[2,3-f]indole-3,4'-piperidine] → 1'-Methyl-5-(2'-methyl-4'-(5-methyl-1,3,4-oxadiazol-2-yl)biphenyl-4-carbonyl)-2,3,6,7-tetrahydrospiro[furo[2,3-f]indole-3,4'-piperidine]

Participants

Reaction Steps

The title compound was prepared from 1'-methyl-2,3,6,7-tetrahydrospiro[furo[2,3-f]indole-3,4'-piperidine] (D8) and 2'-methyl-4'-(5-methyl-1,3,4-oxadiazol-2-yl)biphenyl-4-carboxylic acid (D9) using the procedure outlined in WO 96/19477 (23%). This was converted to the oxalate salt, which precipitated from acetone/ether as a white solid.

Provenance & Evidence