Tetrahedron Letters p. 4953 - 4956 (1996)
Update date:2022-07-29
Topics:
Ueki, Masaaki
Tachibana, Jun
Ishii, Yusuke
Okumura, Jin
Goto, Mitsutaka
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 P-N bonds are stable toward 20% piperidine in DMF and were cleaved completely with 95% trifluoroacetic acid.
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