Asymmetric Total Syntheses of (−)-Variabilin and (−)-Glycinol
摘要:
Total syntheses of (-)-variabilin and (-)-glycinol have been accomplished, using the catalytic, asymmetric "Interrupted" Feist-Benary reaction (IFB) as the key transformation to introduce both stereogenic centers. A monoquinidine pyrimidinyl ether catalyst affords the IFB products In over 90% ee in both cases. Other key steps include an intramolecular Buohwald-Hartwig coupling and a nickel-catalyzed aryl tosylate reduction.
Synthesis and Structure–Activity Relationship Studies of O-Biphenyl-3-yl Carbamates as Peripherally Restricted Fatty Acid Amide Hydrolase Inhibitors
摘要:
The peripherally restricted fatty acid amide hydrolase (FAAH) inhibitor URB937 (3, cyclohexylcarbamic acid 3'-carbamoyl-6-hydroxybiphenyl-3-yl ester) is extruded from the brain and spinal cord by the Abcg2 efflux transporter. Despite its inability to enter the central nervous system (CNS), 3 exerts profound antinociceptive effects in mice and rats, which result from the inhibition of FAAH in peripheral tissues and the consequent enhancement of anandamide signaling at CB1 cannabinoid receptors localized on sensory nerve endings. In the present study, we examined the structure-activity relationships (SAP.) for the biphenyl region of compound 3, focusing on the carbamoyl and hydroxyl groups in the distal and proximal phenyl rings. Our SAR studies generated a new series of peripherally restricted FAAH inhibitors and identified compound 35 (cyclohexylcarbamic acid 3'-carbamoyl-5-hydroxybiphenyl-3-yl ester) as the most potent brain-impermeant FAAH inhibitor disclosed to date.
[EN] KRAS G12D INHIBITORS<br/>[FR] INHIBITEURS DE KRAS G12D
申请人:MIRATI THERAPEUTICS INC
公开号:WO2021041671A1
公开(公告)日:2021-03-04
The present invention relates to compounds that inhibit KRas G12D. In particular, the present invention relates to compounds that inhibit the activity of KRas G12D, pharmaceutical compositions comprising the compounds and methods of use therefor.
been developed and applied to multicomponent polymerization and controlled radical polymerization for the construction of random and block copolymers. This chemistry features mild reaction conditions, high yield, simple isolation, and water as the only byproduct. With the advantages of the distinct nucleophilicity of thiol and hydroxyl groups, the chemistry could be used for stepwise labeling and modifications
Design and enantioselective synthesis of 3-(α-acrylic acid) benzoxaboroles to combat carbapenemase resistance
作者:You-Cai Xiao、Xiao-Pan Chen、Ji Deng、Yu-Hang Yan、Kai-Rong Zhu、Gen Li、Jun-Lin Yu、Jürgen Brem、Fener Chen、Christopher J. Schofield、Guo-Bo Li
DOI:10.1039/d1cc03026d
日期:——
Chiral 3-substituted benzoxaboroles were designed as carbapenemase inhibitors and efficiently synthesised via asymmetric Morita–Baylis–Hillman reaction. Some of the benzoxaboroles were potent inhibitors of clinically relevant carbapenemases and restored the activity of meropenem in bacteria harbouring these enzymes. Crystallographic analyses validate the proposed mechanism of binding to carbapenemases
Second Generation Grp94-Selective Inhibitors Provide Opportunities for the Inhibition of Metastatic Cancer
作者:Vincent M. Crowley、Dustin J. E. Huard、Raquel L. Lieberman、Brian S. J. Blagg
DOI:10.1002/chem.201703398
日期:2017.11.7
the 90 kDa heat shock protein (Hsp90) family and its inhibition represents a promising therapeutic target for the treatment of many diseases. Modification of the first generation cis‐amide bioisostereimidazole to alter the angle between the resorcinol ring and the benzyl side chain via cis‐amide replacements produced compounds with improved Grp94 affinity and selectivity. Structure–activity relationship
葡萄糖调节蛋白94(Grp94)是90 kDa热休克蛋白(Hsp90)家族的内质网(ER)常驻同工型,其抑制作用代表了治疗许多疾病的有希望的治疗靶标。修改第一代顺式酰胺生物同工甾醇咪唑,通过顺式酰胺替代来改变间苯二酚环与苄基侧链之间的夹角,从而制得了具有改善的Grp94亲和力和选择性的化合物。结构-活性关系研究导致发现化合物30,该化合物表现为540 n m对Grp94的亲和力和73倍的选择性。Grp94负责与细胞信号传导和运动相关的蛋白质(包括选定的整联蛋白)的成熟和运输。研究表明,Grp94选择性抑制剂30对多种侵袭性和转移性癌症表现出有效的抗迁移作用。