Nitrilases Catalyze Key Step to Conformationally Constrained GABA Analogous γ-Amino Acids in High Optical Purity
摘要:
[GRAPHICS]Five- and six-membered carbocyclic gamma-amino acids were prepared in high enantiomeric purity by nitrilase-mediated transformation of hitherto unreported gamma-amino nitriles. The nitrilases investigated reveal a strong enantiopreference for cis-isomers (up to 99% ec), whereas trans-isomers were available in up to 86% ec. The biocatalytic enantioselective syntheses of cis-3-aminocyclohexanecarboxylic acid (3b), trans-3-aminocyclohexanecarboxylic acids (4b, 6b, 8b) as well as trans-3-aminocylor,entanecarboxylic acid (2b) are hereby reported for the first time.
Pyrimidine derivatives useful as inhibitors of PKC-theta
申请人:Barbosa J.M. Antonio
公开号:US20060025433A1
公开(公告)日:2006-02-02
Disclosed are novel compounds of formula (I):
wherein X, Y, R
1
, R
2
and R
3
are as defined herein, which are useful as inhibitors of PKC-theta and are thus useful for treating a variety of diseases and disorders that are mediated or sustained through the activity of PKC-theta, including immunological disorders and type II diabetes. This invention also relates to pharmaceutical compositions comprising these compounds, methods of using these compounds in the treatment of various diseases and disorders, processes for preparing these compounds and intermediates useful in these processes.
Cytochrome P450 Catalyzed Oxidative Hydroxylation of Achiral Organic Compounds with Simultaneous Creation of Two Chirality Centers in a Single CH Activation Step
作者:Gheorghe-Doru Roiban、Rubén Agudo、Manfred T. Reetz
DOI:10.1002/anie.201310892
日期:2014.8.11
enantioselectivity is ensured. The present study demonstrates that such control is possible by using wild type or mutant forms of the monooxygenase cytochrome P450BM3 as catalysts in the oxidative hydroxylation of methylcyclohexane and seven other monosubstituted cyclohexane derivatives.
PYRIMIDINE DERIVATIVES USEFUL AS INHIBITORS OF PKC-THETA
申请人:BARBOSA Antonio J.M.
公开号:US20080287410A1
公开(公告)日:2008-11-20
Disclosed are novel compounds of formula (I):
wherein X, Y, R
1
, R
2
and R
3
are as defined herein, which are useful as inhibitors of PKC-theta and are thus useful for treating a variety of diseases and disorders that are mediated or sustained through the activity of PKC-theta, including immunological disorders and type II diabetes. This invention also relates to pharmaceutical compositions comprising these compounds, methods of using these compounds in the treatment of various diseases and disorders, processes for preparing these compounds and intermediates useful in these processes.
Photoredox-Mediated Deoxygenative Alkylation of DNA-Tagged Alkenes with Activated Alcohols
作者:Pratik R. Chheda、Nicholas Simmons、David P. Schuman、Zhicai Shi
DOI:10.1021/acs.orglett.2c03994
日期:2022.12.30
impact for accessing diverse drug-like structures. Herein, we report a DNA-compatible Giese-type addition of nonstabilized C-centered radicals generated by the deoxygenation of preactivated alcohols into on-DNA olefins. Although alcohols have been historically underused as a building block class within DEL synthesis, their activation to a xanthate enables Csp3–Csp3 coupling to furnish sp3-rich products
DNA 编码库 (DEL) 筛选已成为为药物发现应用寻找生物靶标小分子结合物的关键技术。开发新的 DNA 兼容化学物质以扩大可访问的 DEL 化学空间对于提高广泛目标类别和模式的筛选成功率至关重要。此外,使用常用构建块的反应以及启用 fsp 3的反应图书馆成员的增加将对访问各种类似药物的结构产生重大影响。在此,我们报告了一种与 DNA 相容的 Giese 型加成,即由预活化醇脱氧生成的非稳定 C 中心自由基生成 DNA 烯烃。尽管醇在 DEL 合成中一直未被充分用作构建单元类,但它们对黄原酸盐的活化使 Csp 3 –Csp 3偶联以提供富含 sp 3的产品。该反应与多类官能团相容,不破坏DNA标签,适用于DEL生产。
MICROORGANISMS AND PROCESS FOR PRODUCING AMIDE COMPOUNDS
申请人:Daicel Chemical Industries, Ltd.
公开号:EP1055724A1
公开(公告)日:2000-11-29
A nitrile compound having a complicated structure (e.g., 2-hydroxy-4-methylthiobutyronitrile) is converted into an amide compound with high production efficiency, by using a novel microorganism of which the gene 16S rRNA has a specific base sequence. As the microorganism, Rhodococcus sp. Cr4 strain and Rhodococcus sp. Am8 strain or the like is employed.