Detail of "6532-76-9"

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An improved resolution of b-hydroxy-DL-aspartic acid on optically active resin containing L-lysine or L-ornithine

An improved resolution of b-hydroxy-DL-aspartic acid on optically active resin containing L-lysine or L-ornithine. Anpeiji, Shigeharu; Toritani, Yasunobu; Kawada, Kazunori; Kondo, Seiji; Murai, Shinji; Okai, Hideo; Yoshida, Hisanobu; Imai, Hideo (Fac. Eng., Hiroshima Univ., Higashihiroshima 724, Japan). Bull. Chem. Soc. Jpn., 56(10), 2994-8 (English) 1983.In this article, certain chemicals are used. Some of their cas registry numbers are 56-41-7 and 6532-76-9 CODEN: BCSJA8. ISSN: 0009-2673. DOCUMENT TYPE: Journal CA Section: 34 (Amino Acids, Peptides, and Proteins) threo-b-Hydroxy-DL-aspartic acid was resolved by column chromatog. on an optically active resin contg. L-lysine using an NH4OAc solvent system, whereas erythro-b-hydroxy-DL-aspartic acid was resolved by column chromatog. on a optically active resin contg. L-ornithine using a pyridinium acetate solvent system. The above racemates were resolved on a preparative scale. The above optically active resins were prepd. by esterifying Boc-Lys(Boc)-OH (Boc = Me3CO2C) or Boc-Orn(Boc)-OH with chloromethylated styrene-divinylbenzene copolymer and Boc-deblocking the resulting protected amino acid hydroxymethylated polymer esters by HCl/dioxane. .