N,N′-Dialkyldiamide-type phosphate protecting groups for Fmoc synthesis of phosphotyrosine-containing peptides
作者:Masaaki Ueki、Jun Tachibana、Yusuke Ishii、Jin Okumura、Mitsutaka Goto
DOI:10.1016/0040-4039(96)01077-5
日期:1996.7
Z-Tyr[P(O)(NHR)2]-OBzl (R=n-Pr and i-Pr) were obtained by reactions of Z-Tyr-OBzl, lithiated with LDA, with N,N′-dipropyl- or diisopropyl-phosphorodiamidic chloride. Fmoc derivatives, Fmoc-Tyr[P(O)(NHR)2]-OH, were obtained from them as stable crystals. The PN bonds are stable toward 20% piperidine in DMF and were cleaved completely with 95% trifluoroacetic acid.
Z-Tyr [P(O)(NHR)2 ] -OBzl(R = n -Pr和i -Pr)通过Z-Tyr-OBzl(经LDA锂化)与N,N'-二丙基-或二异丙基-磷二酰氯。从它们获得的Fmoc衍生物Fmoc-Tyr [P(O)(NHR)2 ] -OH为稳定的晶体。PN键对DMF中20%的哌啶稳定,并被95%的三氟乙酸完全裂解。