tert-butyl 3(R)-amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzothiazepine-5-acetate → HCID 70456987, compound

Participants

Reaction Steps

In a manner similar to that described in Example 1, the reaction of 1.5 g of tert-butyl 3(R)-amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzothiazepine-5-acetate with 5 g of ethyl 4-cyclohexyl-2-oxobutyrate obtained in Reference Example 5 is carried out, and the product is purified by silica gel column chromatography (hexane:ethyl acetate=4:1). From the first fraction is obtained 0.3 g of tert-butyl 3(R)-[1(R)-ethoxycarbonyl-3-cyclohexylpropyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzothiazepine-5-acetate as a colorless oil.

Provenance & Evidence