合成路线图解说明: The condensation of N-(benzyloxycarbonyl)-L-glutamic acid bis(2,4,6-trichlorophenyl) ester (I) with taurine (II) in the presence of NaOH provided diamide (III). After deprotection of the benzyloxycarbonyl group of (III) by hydrogenolysis over Pd/C, the resulting amine (IV) was coupled with N-palmitoyl-S-(2,3-dilauroyloxypropyl)cysteine (V) using N,N'-dicyclohexylcarbodiimide and N-hydroxynorbornan-2,3-dicarboximide (A) to furnish the title compound. |