- Correlation between the Configurational Structure and the Asymmetric Hydrogenation of Δ1-, Δ2-, and Δ3-Dehydrotripeptides
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The heterogeneous catalytic hydrogenation of Δ1-dehydrotripeptides (Δ1-DHP), which have a β-turn structure, was carried out to give the corresponding tripeptides indicative of the very large diastereomeric excess, comparing with thos
- Shin, Chung-gi,Ogawa, Kazumichi,Morooka, Katsuhiro,Yonezawa, Yasuchika
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p. 459 - 462
(2007/10/02)
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- SYNTHESIS OF CHIRAL OLIGOPEPTIDES BY MEANS OF CATALYTIC ASYMMETRIC HYDROGENATION OF DEHYDROPEPTIDES
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Asymmetric hydrogenation of Ac-ΔTyr(Ac)-(S)-Ala-Gly-OMe (6), Ac-ΔTyr(Ac)-(R)-Ala-Gly-(S)-Phe-OMe (7), Ac-ΔPhe-NH-CH(R)-CH2-OCH2Ph (10), HCO-ΔPhe-(S)-Leu-OMe (16), X-AA-ΔPhe-AA'-OMe ( 5: X=tBOC, CBZ, CF3CO; AA, AA'= α-amino acid ), and t
- Ojima, Iwao,Yoda, Noriko,Yatabe, Momoko,Tanaka, Toshiyuki,Kogure, Tetsuo
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p. 1255 - 1268
(2007/10/02)
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- SYNTHESIS OF CHIRAL TRIPEPTIDES BY ASYMMETRIC HYDROGENATION OF DEHYDROPEPTIDES. REMARKABLE EFFECTS OF N-PROTECTING GROUPS ON STEREOSELECTIVITY AND REACTIVITY
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Dehydrotripeptides, X-CH(Ri)-ΔPhe-CH(Rk)COOMe (3: X = tBOC-NH, CBZ-NH, CF3CONH and N3), were employed for the asymmetric hydrogenation catalyzed by chiral rhodium complexes and it was found that tBOC-3 brought a
- Ojima, Iwao,Yoda, Noriko
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p. 3913 - 3916
(2007/10/02)
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