tert-butyl 7-amino-3,3-dimethyl-3,4,5',6'-tetrahydro-2H-spiro[naphthalene-1,4'-[1,3]thiazine]-2'-ylcarbamate 、
5-氯吡啶-2-羧酸 以to provide tert-butyl 7-(5-chloropicolinamido)-3,3-dimethyl-3,4,5′,6′-tetrahydro-2H-spiro[naphthalene-1,4′-[1,3]thiazine]-2′-ylcarbamate (32 mg, 73% yield) as a solid的产率得到tert-butyl 7-(5-chloropicolinamido)-3,3-dimethyl-3,4,5',6'-tetrahydro-2H-spiro[naphthalene-1,4'-[1,3]thiazine]-2'-ylcarbamate