Processes for preparation of N-protected-β-amino alcohols and N-protected-β-amino epoxides
    1.
    发明授权
    Processes for preparation of N-protected-β-amino alcohols and N-protected-β-amino epoxides 失效
    制备N-保护的β-氨基醇和N-保护的β-氨基环氧化物的方法

    公开(公告)号:US07122696B2

    公开(公告)日:2006-10-17

    申请号:US10432353

    申请日:2001-11-30

    IPC分类号: C07C261/00

    摘要: Herein are disclosed a process for increasing in purity, or purifying, an N-protected-β-aminoalcohol which process comprises (i) adding water to a polar organic solvent in which an N-protected-β-aminoalcohol such as a (2R,3S)- or (2S,3R)-3-tert-butoxycarbonylamino-1-halo-2-hydroxy-4-phenylbutane or the like, or (ii) crystallizing such an N-protected-β-aminoalcohol from a diol or a diol-based mixed solvent, and a process for producing the corresponding N-protected-β-aminoepoxide which process comprises treating, with a base, the thus purity-enhanced N-protected-β-aminoalcohol. Such N-protected-β-aminoalcohols and N-protected-β-aminoepoxides are both useful as synthetic intermediates for medicine compounds, such as, e.g., HIV protease inhibitor and the like.

    摘要翻译: 本文公开了提高纯度或纯化N-保护的β-氨基醇的方法,该方法包括(i)向极性有机溶剂中加入水,其中N-保护的β-氨基醇如(2R, 3S) - 或(2S,3R)-3-叔丁氧基羰基氨基-1-卤代-2-羟基-4-苯基丁烷等,或(ii)将这种N-保护的β-氨基醇从二醇或 二醇基混合溶剂,以及生产相应的N-保护的β-氨基环氧化物的方法,该方法包括用碱处理如此纯度增强的N-保护的β-氨基醇。 这种N-保护的β-氨基醇和N-保护的β-氨基环氧化物都可用作药物化合物的合成中间体,例如HIV蛋白酶抑制剂等。

    Process for producing aminoepoxide
    2.
    发明申请
    Process for producing aminoepoxide 审中-公开
    生产氨基氧化物的方法

    公开(公告)号:US20050137408A1

    公开(公告)日:2005-06-23

    申请号:US10972520

    申请日:2004-10-26

    CPC分类号: C07D301/26 C07D303/36

    摘要: N-carbamate protected-3-amino-1,2-epoxy-4-(hydroxy substituted phenyl)butane may be produced in high optical purity and in high yield, by hydrogenating N-carbamate protected-3-amino-1-chloro-2-hydroxy-4-(benzyloxy substituted phenyl)butane in the presence of a metal catalyst to give N-carbamate protected-3-amino-1-chloro-2-hydroxy-4-(hydroxy substituted phenyl)butane and treating this compound with a base.

    摘要翻译: N-氨基甲酸酯保护的3-氨基-1,2-环氧-4-(羟基取代的苯基)丁烷可以通过氢化N-氨基甲酸酯保护的3-氨基-1-氯 - 2-羟基-4-(苄氧基取代的苯基)丁烷,在金属催化剂存在下,得到N-氨基甲酸酯保护的3-氨基-1-氯-2-羟基-4-(羟基取代的苯基)丁烷并处理该化合物 与一个基地。

    Production method of &bgr;-amino-&agr;-hydroxycarboxylic acid
    3.
    发明授权
    Production method of &bgr;-amino-&agr;-hydroxycarboxylic acid 失效
    β-氨基-α-羟基羧酸的制备方法

    公开(公告)号:US06806384B2

    公开(公告)日:2004-10-19

    申请号:US10118958

    申请日:2002-04-10

    IPC分类号: C07C22900

    摘要: The present invention provides a production method of an optically active &bgr;-amino-&agr;-hydroxycarboxylic acid, which includes the following steps (a)-(c): (a) treating an optically active N-carbamate protected &bgr;-amino epoxide with an acid to give an optically active 5-hydroxymethyl-2-oxazolidinone; (b) oxidizing the resulting compound in the presence of 2,2,6,6-tetramethyl-1-piperidinyloxy and hypochlorite to give an optically active 4-benzyl-2-oxo-5-oxazolidinecarboxylic acid; and (c) treating the 4-benzyl-2-oxo-5-oxazolidinecarboxylic acid with a base, and a production method of an optically active N-carbamate protected &bgr;-amino-&agr;-hydroxycarboxylic acid which includes protection of the amino group with a carbamate type protecting group. The industrial production method of the present invention can produce these compounds efficiently.

    摘要翻译: 本发明提供光学活性β-氨基-α-羟基羧酸的制备方法,其包括以下步骤(a) - (c):(a)用光学活性N-氨基甲酸酯保护的β-氨基环氧化物 酸,得到光学活性的5-羟甲基-2-恶唑烷酮;(b)在2,2,6,6-四甲基-1-哌啶基氧基和次氯酸盐存在下氧化所得化合物,得到光学活性的4-苄基-2 - 氧代-5-恶唑烷羧酸; 和(c)用碱处理4-苄基-2-氧代-5-恶唑烷羧酸,以及光学活性N-氨基甲酸酯保护的β-氨基-α-羟基羧酸的制备方法,其包括保护氨基与 氨基甲酸酯型保护基。 本发明的工业生产方法可以有效地生产这些化合物。

    Production method of aminochlorohydrin sulfate
    4.
    发明申请
    Production method of aminochlorohydrin sulfate 审中-公开
    氨基氯代硫酸氢盐的生产方法

    公开(公告)号:US20070129443A1

    公开(公告)日:2007-06-07

    申请号:US11582504

    申请日:2006-10-18

    IPC分类号: A61K31/137 C07C209/06

    摘要: Highly pure (2R,3S)-3-tert-butoxycarbonylamino-1-chloro-2-hydroxy-4-phenylbutane or (2S,3R)-3-tert-butoxycarbonylamino-1-chloro-2-hydroxy-4-phenylbutane may be conveniently produced in high yield by: (a) reacting compound (1) with lithiumchloromethane to give compound (2) and at least a byproduct; (b) dissolving compound (2) and the byproduct in a polar solvent and adding water to the solution to precipitate compound (2) as crystals; (c) reducing the crystals of compound (2) to give compound (3) and at least its diastereomer as an impurity; (d) adding sulfuric acid thereto to give compound (4) and at least its diastereomer as an impurity; and (e) precipitating compound (4) as crystals from a solution containing acetic acid ester or acetic acid ester.

    摘要翻译: 高纯度(2R,3S)-3-叔丁氧基羰基氨基-1-氯-2-羟基-4-苯基丁烷或(2S,3R)-3-叔丁氧基羰基氨基-1-氯-2-羟基-4-苯基丁烷可以 通过以下方法可以方便地以高产率制备:(a)使化合物(1)与氯化锂反应得到化合物(2)和至少一种副产物; (b)将化合物(2)和副产物溶解在极性溶剂中,并向溶液中加入水以使化合物(2)晶体沉淀; (c)减少化合物(2)的晶体,得到化合物(3)和至少其作为杂质的非对映异构体; (d)向其中加入硫酸,得到化合物(4)和至少其作为杂质的非对映异构体; 和(e)从含有乙酸酯或乙酸酯的溶液中沉淀出结晶的化合物(4)。

    Method for producing epoxide crystal
    5.
    发明授权
    Method for producing epoxide crystal 失效
    环氧化物晶体的制备方法

    公开(公告)号:US06765100B2

    公开(公告)日:2004-07-20

    申请号:US09973191

    申请日:2001-10-10

    IPC分类号: C07D30124

    摘要: The invention relates to a method for industrially producing highly pure (2R, 3S)- or (2S, 3R)-N-carbamate-protected &bgr;-aminoepoxide (crystal) or (2R, 3S)- or (2S, 3R)-N-carbamate-protected &bgr;-aminoalcohol. The method for producing N-carbamate-protected &bgr;-aminoepoxide crystal, includes one or more of the following steps (a) to (d): (a) dissolving (2R, 3S)- or (2S, 3R)-N-carbamate-protected &bgr;-aminoalcohol containing at least the diastereomer as an impurity in a solvent including at least one or more selected from aromatic hydrocarbon solvent, saturated hydrocarbon solvent, aqueous mixture solvent, acetone and 2-propanol, to remove insoluble matters; (b) treating the (2R, 3S)- or (2S, 3R)-N-carbamate-protected &bgr;-aminoalcohol with a base, thereby converting the N-carbamate-protected &bgr;-aminoalcohol to (2R, 3S)- or (2S, 3R)-N-carbamate-protected &bgr;-aminoepoxide; (c) treating the (2R, 3S)- or (2S, 3R)-N-carbamate-protected &bgr;-aminoepoxide containing at least the diastereomer as an impurity with an acid, thereby converting the diastereomer as an impurity to (4S, 5R) or (4R, 5S) oxazolidin-2-one derivative, and optionally separating and removing the resulting oxazolidin-2-one derivative in water or an aqueous mixture solvent; and (d) crystallizing the (2R, 3S)- or (2S, 3R)-N-carbamate-protected &bgr;-aminoepoxide in a mixture solvent of water and water-miscible organic solvent. By the methods of the present invention, highly pure (2R, 3S)- or (2S, 3R)-N-carbamate-protected &bgr;-aminoepoxide or (2R, 3S) or (2S, 3R)-N-carbamate-protected &bgr;-aminoalcohol can be efficiently produced.

    摘要翻译: 本发明涉及工业生产高纯度(2R,3S) - 或(2S,3R)-N-氨基甲酸酯保护的β-氨基环氧化物(晶体)或(2R,3S) - 或(2S,3R)-N 氨基甲酸酯保护的β-氨基醇。 制备N-氨基甲酸酯保护的β-氨基环氧化物晶体的方法包括一个或多个以下步骤(a)至(d):( a)将(2R,3S) - 或(2S,3R)-N-氨基甲酸酯 在包含至少一种或多种选自芳族烃溶剂,饱和烃溶剂,含水混合物溶剂,丙酮和2-丙醇的溶剂的溶剂中至少含有作为杂质的非对映体的β-保护的β-氨基醇,以除去不溶物;(b) 用碱处理(2R,3S) - 或(2S,3R)-N-氨基甲酸酯保护的β-氨基醇,从而将N-氨基甲酸酯保护的β-氨基醇转化为(2R,3S) - 或(2S,3R )-N-氨基甲酸酯保护的β-氨基环氧化物;(c)用酸处理至少含有非对映体作为杂质的(2R,3S) - 或(2S,3R)-N-氨基甲酸酯保护的β-氨基环氧化物,由此 将非对映异构体作为杂质转化为(4S,5R)或(4R,5S)恶唑烷-2-酮衍生物,任选分离和除去得到的恶唑烷-2-酮衍生物 在水或含水混合溶剂中; 和(d)在水和水混溶性有机溶剂的混合溶剂中结晶(2R,3S) - 或(2S,3R)-N-氨基甲酸酯保护的β-氨基环氧化物。 通过本发明的方法,高纯度(2R,3S) - 或(2S,3R)-N-氨基甲酸酯保护的β-氨基环氧化物或(2R,3S)或(2S,3R)-N-氨基甲酸酯保护的β - 氨基醇可以有效地生产。