3-巯基丙酸乙酯 、
Boc-beta-丙氨酸 、
(S)-4-[N-[(tert-butoxy)carbonyl]-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1H-indol-3-yl]butanoic acid 、
Fmoc-(S)β2hTyr(t-Bu)-(S)β2hAla-OH 、 alkaline earth salt of/the/ methylsulfuric acid 、 alkaline earth salt of/the/ methylsulfuric acid 以10 mg的产率得到H-β
2hGly-(S)β
2hTrp-(S)β
2hArg-(S)β
2hVal-(S)β
2hAsn-(S)β
2hGlu-(R,S)β
2hThr-(R)β
2hSer-(S)β
2hTyr-(S)β
2hAla-S-ethyl propionate