作者:Scott A. Snyder、Trevor C. Sherwood、Audrey G. Ross
DOI:10.1002/anie.201002264
日期:——
A polycyclic collapse: Use of a carefully designed acyclic intermediate participated in a cascade reaction that formed the entire core of the polyketide‐derived dalesconols in a single flask (see scheme). A number of additional and carefully controlled synthetic operations completed an expeditious synthesis of both of these highly bioactive natural products as well as structural congenors.
The invention encompasses compounds of formula I as well as compositions and methods of using the compounds. The compounds have activity against hepatitis C virus (HCV) and are useful in treating those infected with HCV.
[EN] INHIBITORS OF PURINE NUCLEOSIDE PHOSPHORYLASE - SYNTHESIS AND USE THEREOF FOR TREATMENT OF T-CELL ACUTE LYMPHOBLASTIC LEUKEMIA AND LYMPHOMA<br/>[FR] INHIBITEURS DE LA SYNTHÈSE DE LA PURINE NUCLÉOSIDE PHOSPHORYLASE ET LEUR UTILISATION POUR LE TRAITEMENT DE LA LEUCÉMIE LYMPHOBLASTIQUE AIGUË À LYMPHOCYTES T ET DU LYMPHOME
申请人:USTAV ORGANICKE CHEMIE A BIOCHEMIE AV CR V V I
公开号:WO2021083438A1
公开(公告)日:2021-05-06
The present invention relates to new compounds of general formula I, their synthesis, their pharmaceutically acceptable salts, and their use in treatment of T-cell acute lymphoblastic leukemia and lymphoma.
作者:Meng Wu、Ling Li、An-Zheng Feng、Bo Su、De-min Liang、Yu-xiu Liu、Qing-min Wang
DOI:10.1039/c0ob01214a
日期:——
Papilistatin has been isolated recently and found to have good anticancer and antibacterial activity. Papilistatin is a unique phenanthrene-1,10-dicarboxylic acid. The first total synthesis of papilistatin is described here with radical cyclisation as the key step.
The unexpected role of pyridine-2-carboxylic acid in manganese based oxidation catalysis with pyridin-2-yl based ligands
作者:Dirk Pijper、Pattama Saisaha、Johannes W. de Boer、Rob Hoen、Christian Smit、Auke Meetsma、Ronald Hage、Ruben P. van Summeren、Paul L. Alsters、Ben L. Feringa、Wesley R. Browne
DOI:10.1039/c0dt00452a
日期:——
A number of manganese-based catalysts employing ligands whose structures incorporate pyridyl groups have been reported previously to achieve both high turnover numbers and selectivity in the oxidation of alkenes and alcohols, using H2O2 as terminal oxidant. Here we report our recent finding that these ligandsdecompose in situ to pyridine-2-carboxylic acid and its derivatives, in the presence of a
一些 锰先前已经报道了使用H 2 O 2作为末端氧化剂的,使用具有结合有吡啶基基团的结构的配体的有机基催化剂,以在烯烃和醇的氧化中实现高周转率和选择性。在这里,我们报告我们最近的发现,这些配体在原位分解为吡啶-2-羧酸和其衍生物,在锰源,H 2 O 2和碱的存在下。重要的是,分解发生在有机底物催化氧化开始之前。发现与锰源一起形成的吡啶-2-甲酸提供了观察到的催化活性。这一系列的退化吡啶基 配体 吡啶-2-羧酸在反应条件下的反应通过1 H NMR光谱证实。在所有情况下,锰/的活性和选择性吡啶基 包含的配体体系与观察到的相同数量的当量 吡啶-2-羧酸; 除此之外,当吡啶-2-羧酸直接使用H 2 O 2时,没有观察到滞后相,效率从6–8当量降低。与基于吡啶-2-基的配体达到1–1.5当量。和吡啶-2-羧酸。