反应详情

84 mg of 2-[[[N-(9-fluorenylcarbonyl)glycyl]-L-valyl]amino]-6-methylbenzoic acid was prepared exactly as in step c) of Example 3, except that 126 mg of 6-methyl-2-(L-valylamino)benzoic acid was subjected to a condensation reaction with 188 mg of N-(9-fluorenylcarbonyl)glycine in place of 9-fluorenyloxyacetic acid used in Example 3.