1'-Ethyl-2,3,6,7-tetrahydrospiro[furo[2,3-f]indole-3,4'-piperidine] → 5-[4'-(Ethoxycarbonylamino)-2'-methylbiphenyl-4-carbonyl]-1'-ethyl-2,3,6,7-tetrahydrospiro[furo[2,3-f]indole-3,4'-piperidine]

Participants

Reaction Steps

This compound was prepared from 4'-(ethoxycarbonylamino)-2'-methylbiphenyl-4-carboxylic acid (D61) and 1'-ethyl-2,3,6,7-tetrahydrosprio[furo[2,3-f]indole-3,4'-piperidine] (D109), following the procedure of Example 29. This gave the title compound (61%) as a straw coloured foam, which was converted to its hydrochloride salt.

Provenance & Evidence