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1.
Summary The indirect stereochemical resolution of the enantiomers of phenylalanine analogs was studied by high-performance liquid
chromatographic methods. The resolution was performed by applying pre-column derivatization with (S)-N-(4-nitrophenoxycarbonyl)phenylalanine methoxyethyl ester, (S)-NIFE, as a new chiral derivatizing agent. Its applicability is demonstrated by the derivatization and separation of a series
of ring-and α-methyl-substituted phenylalanines and phenylalanine amides, and especially by the derivatization of sterically
hindered, less reactive α-methyl-substituted phenylalanine analogs. The diastereomeric, derivatives produced were separated
by reversed-phase high-performance liquid, chromatography. The conditions of both derivatization and separation were optimized.
The method described offers good enantioselectivity for various chiral amino compounds derived from chemo-enzymatic processes. 相似文献
2.
G. Yu. Ishmuratov M. P. Yakovleva R. Ya. Kharisov I. M. Muslimova R. R. Muslukhov R. L. Safiullin G. A. Tolstikov 《Russian Chemical Bulletin》1997,46(5):1033-1035
An enantiospecific synthesis of (S)-(+)-3-methylheneicosan-2-one, an analog of the sex pheromone of the German cockroach (Blatella germanica L.), was carried out through selective transformations of (3R,6S)-3,7-dimethyloctane-6-olide obtained from (−)-menthonevia the Baeyer—Villiger reaction.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 1071–1073, May, 1997. 相似文献
3.
A. V. Afonin 《Russian Chemical Bulletin》1996,45(5):1145-1147
A similarity between manifestations of the effects of the intra- and intermolecular hydrogen bonds C-H...X (X = O, N) in1H and13C NMR spectra has been shown. A correlated increase in the direct spin-spin coupling constant13C—1H and the chemical shifts of the proton participating in the interaction has been observed.Translated fromIzvestiya Akademii Nauk. Seriyo Khimicheskaya, No. 5, pp. 1205–1207, May, 1996. 相似文献
4.
G. Yu. Ishmuratov R. Ya. Kharisov M. P. Yakovleva R. R. Muslukhov E. G. Galkin V. S. Shmakov T. V. Khakimova G. A. Tolstikov 《Russian Chemical Bulletin》2000,49(4):717-721
An enantioselective (ee−50%) four-step synthesis of (S)-6-methylhept-5-en-2-ol (“sulcatol”), which is the aggregation pheromone ofGnathotrichus sulcatus, from 3S,7-dimethylocta-1,6-diene was developed.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 713–717, April, 2000. 相似文献