HCID 178445897, compound → HCID 178445914, compound

Participants

Reaction Steps

The procedure described in Example 1(a) was repeated, but using 125 mg. (0.25 mmole) of N-(2-benzyloxycarbonyl-1,2,3,4-tetrahydro-β-carbolin-3-ylcarbonyl)-L-histidine hydrazide. There were obtained 120 mg. of N-(2-benzyloxycarbonyl-1,2,3,4-tetrahydro-β-carbolin-3-ylcarbonyl)-L-histidyl-L-leucinal semicarbazone. This product was then treated in the same way as in Example 1(b) by partition chromatography using Sephadex G-25, to give 67 mg. of the desired compound as a white powdery solid, melting at 126°-130° C.; [α]22 +21.6° (C`0.5, methanol).

Provenance & Evidence