[(3S,6S,13S)-3-Methyl-13-((2S,4R)-4-methyl-5-oxo-tetrahydro-furan-2-yl)-2,5-dioxo-1,4-diaza-cyclotridec-6-yl]-carbamic acid tert-butyl ester 、
(S)-2-Amino-3-methyl-N-pyridin-4-ylmethyl-butyramide 在
2-羟基吡啶 作用下,
生成 tert-butyl N-[(3S,6S,13S)-13-[(1S,3R)-1-hydroxy-3-methyl-3-{[(1S)-2-methyl-1-[(pyridin-4-ylmethyl)carbamoyl]propyl]carbamoyl}propyl]-3-methyl-2,5-dioxo-1,4-diazacyclotridecan-6-yl]carbamate