反应详情

The process is conducted as described in the foregoing Example 6, except that instead of tyrosine 0.21 g of tryptophane is used, the reaction medium pH is 4.0. 0.105 g of 5-hydroxytryptophan is obtained (50% as calculated for the starting compound) having melting point of 287°-288° C. The composition, in percent, is as follows: