Cyanamide → HCID 508624, compound

Participants

Reaction Steps

To a stirred solution of thioamide Nα-isobutyl-Nα-(4-methylbenzenesulfonyl)-Nα-[N′α-(4-methylbenzenesulfonyl)-L-thiotryptophanyl]-L-lysine (240 mg, 0.33 mmol, example 73) in MeOH (3 mL) was added cyanamide (28 mg, 0.66 mmol). The mixture was stirred for 5 min, then mercuric acetate (209 mg, 0.66 mmol) was added. The reaction was stirred for 3 h then diluted with saturated NH4Cl and extracted with EtOAc. The organic layer was washed with brine and concentrated then rediluted with THF/MeOH (2 mL/1 mL) and treated with 1N NaOH (0.8 mL). After stirring for 4 h, the reaction was acidified with 1N HCl and extracted with EtOAc. The organic layer was dried over MgSO4, concentrated and purified by column chromatography to give 154 mg (65%) of the final product.

Provenance & Evidence