Fmoc-L-缬氨酸 、
Fmoc-O-三苯甲基-L-丝氨酸 、
4-(芴甲氧羰基氨基)丁酸 、
4-[4-(Allyloxycarbonylamino-methyl)-phenylamino]-2-phenyl-quinoline-8-carboxylic acid 2,5-dioxo-pyrrolidin-1-yl ester 、 alkaline earth salt of/the/ methylsulfuric acid 以5.5%的产率得到4-[4-[[[(2S)-2-[[(2S)-2-(4-aminobutanoylamino)-3-hydroxypropanoyl]amino]-3-methylbutanoyl]amino]methyl]anilino]-N-[(2S)-1-amino-5-(diaminomethylideneamino)-1-oxopentan-2-yl]-2-phenylquinoline-8-carboxamide