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正交保护赖氨酸的合成 总被引:4,自引:0,他引:4
具有不同氨基保护基的赖氨酸在树状,环状多肽及糖肽等的合成中非常重要,以Dde、Fmoc,Aloc和Z为保护基合成了6种正交保护的赖氨酸。 相似文献
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Ethenylbenzothiazoles were synthesized by the Horner-Emmons reaction of benzothiazolylmethylphosphonate with aldehydes under phase transfer catalytic conditions in 60–71% yields. Not only aromatic but also aliphatic aldehydes gave the desired products under these mild conditions in 66–71% yields. 相似文献
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Mesropyan E. G. Ambartsumyan G. B. Avetisyan A. A. Sarkisyan M. G. 《Russian Journal of Organic Chemistry》2003,39(8):1130-1132
Reactions were studied of isatin sodium salt with bromocyclohexane, p-ethoxyphenyl chloroethyl ketone, 4,4'-di(chloromethyl)biphenyl, and 4,4'-(dichloromethyl)diphenylmethane. N-cyclohexylisatin, p-ethoxyphenyl N-isatinoethyl ketone, 4,4'-di(N-isatinomethyl)biphenyl, 4-chloromethyl-4'(N-isatinomethyl)biphenyl, 4,4'-di(N-isatinomethyl)diphenylmethane, 4-chloromethyl-4'(N-isatinomethyl)diphenylmethane, and 4-(N-morpholinomethyl)-4'-(N-isatinomethyl)diphenyl were synthesized. 相似文献
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利用异色满酮-4合成了一系列新的异色满并嘧啶类衍生物4a-tf,其结构均经元素分析,IR和HNMR分析予以证实。 相似文献
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以单甲氧基聚乙二醇(mPEG)和Fmoc-Lys(Boc)-OH(1)为主要原料,经过羧基苄酯化、侧链Boc脱除、ε-氨基丁二酸酐修饰得到功能化的赖氨酸化合物N-α-芴甲氧羰基-N-ε-(γ-氧代丁酸)-L-赖氨酸苄酯(4);1和4分别与mPEG在偶联剂D IC/HOB t的作用下联接,最终分别实现了赖氨酸主链和侧链的mPEG定点修饰,合成了新型的N-α-芴甲氧羰基-N-ε-(γ-氧代丁酸聚乙二醇酯)-L-赖氨酸苄酯(5,总收率52.6%)和N-ε-叔丁氧羰基-N-α-芴甲氧羰基-L-赖氨酸聚乙二醇酯(6,收率93.7%),其结构经1H NMR,IR和MS表征。 相似文献
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In 1959, Horiguchi and Kandatsu1 first isolated 2-aminomethylphos-phonic acid from ciliate protozoa. Since then the compound has been found in numerous other organisms2 and recently it has been found in human brain3, liver, heart and skeletal muscles4, and in red blood cell membrane. These findings establish the biological importance of the carbon-phosphorus bond in nature. Quin2 suggested that the naturally occurring aminophosphonic acids are bound to proteins and peptides. 相似文献