SORTASE A INHIBITORS
    3.
    发明申请
    SORTASE A INHIBITORS 审中-公开
    输入一个抑制剂

    公开(公告)号:WO2011028492A2

    公开(公告)日:2011-03-10

    申请号:PCT/US2010046394

    申请日:2010-08-23

    IPC分类号: A61K31/501

    摘要: Bacterial infections, including Methicillin resistant Staphylococcus aureus (MRSA) infections are a major health problem that has created a pressing need for new antibiotics. Pyridazinone, rhodanine, and pyrazolethione compounds effective inhibit the enzymatic activity of sortase A (srtA) found in gram positive bacteria are disclosed. A structure activity relationship (SAR) analysis led to the identification of several pyridazinone and pyrazolethione analogs that inhibit SrtA with IC50 values in the sub-micromolar range. Compounds that inhibit the S. aureus SrtA sortase may function as potent anti-infective agents as this enzyme attaches virulence factors to the cell wall. Many of these molecules also inhibit the sortase enzyme from B. anthracis suggesting that they may be generalized sortase inhibitors. The novel compounds, compositions, uses, formulations, medicaments, articles of manufacture provide improved materials, uses, and treatments useful in combating infectious disorders.

    摘要翻译: 细菌感染,包括耐甲氧西林金黄色葡萄球菌(MRSA)感染是一个主要的健康问题,迫切需要新的抗生素。 公开了有效抑制革兰氏阳性细菌中分泌酶A(srtA)的酶活性的哒嗪酮,绕丹宁和吡唑硫酮化合物。 结构活动关系(SAR)分析导致了几种抑制SrtA的哒嗪酮和吡唑硫酮类似物的鉴定,其IC50值在亚微摩尔范围内。 抑制金黄色葡萄球菌SrtA分选酶的化合物可以作为有效的抗感染剂起作用,因为该酶将毒力因子附着在细胞壁上。 这些分子中的许多还抑制炭疽杆菌分选酶,表明它们可以是广义分解酶抑制剂。 新型化合物,组合物,用途,制剂,药物,制品提供改善的材料,用途和用于对抗传染病的治疗。

    SYNTHESIS OF L-RIBOSE AND 2-DEOXY L-RIBOSE
    9.
    发明申请
    SYNTHESIS OF L-RIBOSE AND 2-DEOXY L-RIBOSE 审中-公开
    L-核糖和2-脱氧L-核糖的合成

    公开(公告)号:WO9839347A3

    公开(公告)日:1998-10-22

    申请号:PCT/US9804302

    申请日:1998-03-05

    发明人: JUNG MICHAEL E XU YUE

    IPC分类号: C07H3/02 C07H

    CPC分类号: C07H3/02

    摘要: A method for synthesizing L-ribose (1) and 2-deoxy L-ribose (12) from inexpensive D-ribose (2) is provided. The 5-O-trityl ribose (3) (prepared in 70 % yield from D-ribose) is reduced with borohydride to give the tetrol (4), which is then peracetylated to the tetraacetate (5). Hydrolysis of the trityl ether followed by Swern oxidation affords the aldehyde (7) via the alcohol (6). This aldehyde is a protected form of L-ribose, being L-ribose 2,3,4,5,-tetraacetate. Mild basic hydrolysis of the acetate affords L-ribose itself (1), thus ending an efficient six-step synthesis of (1) from (2) which proceeds in 39 % overall yield. In a second aspect of the invention, L-ribose is converted into the β-selenophenyl ribofuranoside (10) via the tetraester (9) in 71 % isolated yield for the four steps. Treatment of (10) with tributylstannane and AIBN furnishes in 84 % yield the tribenzoyl 2-deoxy-L-ribofuranoside (11) which, on basic hydrolysis, gives 2-deoxy L-ribose (12) in high yield. In a third aspect of the invention, L-arabinose (13) is converted into 2-deoxy L-ribose (12) via the arabinopyranosyl bromide (14), via similar reductive rearrangement with tributylstannane to give the 2-deoxy ribopyranose tribenzoate (16). Hydrolysis yields 2-deoxy L-ribose. In a third aspect of the invention, L-arabinose is converted into 2-deoxy L-ribose by an alternate route.

    摘要翻译: 提供由廉价的D-核糖(2)合成L-核糖(1)和2-脱氧L-核糖(12)的方法。 用硼氢化物还原5-O-三苯甲基核糖(3)(由D-核糖以70%产率制备),得到四醇(4),然后将其过乙酰化成四乙酸酯(5)。 三苯甲基醚的水解随后进行Swern氧化,通过醇(6)提供醛(7)。 该醛是L-核糖的保护形式,即L-核糖2,3,4,5-四乙酸酯。 乙酸酯的轻度碱性水解提供L-核糖本身(1),因此从(2)结束了(1)的有效六步合成,其总收率为39%。 在本发明的第二个方面中,L-核糖通过四酯(9)转化为β-硒代苯基呋喃核糖苷(10),分离产率为71%,用于四个步骤。 用三丁基锡烷和AIBN处理(10)以84%产率提供三苯甲酰基2-脱氧-L-呋喃核糖苷(11),其在碱性水解下以高收率得到2-脱氧L-核糖(12)。 在本发明的第三方面,L-阿拉伯糖(13)经由阿拉伯吡喃糖基溴(14)经由与三丁基锡烷类似的还原性重排转化为2-脱氧L-核糖(12),得到2-脱氧吡喃核糖三苯甲酸酯(16) )。 水解得到2-脱氧L-核糖。 在本发明的第三方面中,通过替代途径将L-阿拉伯糖转化为2-脱氧L-核糖。