S,S'-diphenylphosphorodithioate 、
Nα-(tert-butoxycarbonyl)tyrosine anthraquinon-2-ylmethylester 在
2,4,6-三异丙基苯磺酰氯 作用下,
以
吡啶 为溶剂,
以65%的产率得到(S)-3-[4-(Bis-phenylsulfanyl-phosphoryloxy)-phenyl]-2-tert-butoxycarbonylamino-propionic acid 9,10-dioxo-9,10-dihydro-anthracen-2-ylmethyl ester