为了扩大在体外选择的背景下可用于DNA序列的化学阵列,我在此提出了五个含有能够进行有机催化的侧链的核苷三磷酸类似物的合成。合成过程涉及偶联含L-脯氨酸的残基(dU t P TP和dU c P TP),二肽(dU FP TP),尿素衍生物(dU Bpu TP)和磺酰胺残基(dU Bs TP)生成适当保护的普通中间体,然后进行三磷酸化。这些改性的dNTP被证明是用于通(优基板外型- )和的PwoDNA聚合酶以及大肠杆菌DNA聚合酶I的Klenow片段,尽管它们仅是9° N m聚合酶可接受的底物。除了dU Bpu TP外,所有修饰的dNTPs都可以通过聚合酶链反应(PCR)轻松地整合到DNA中。修饰的寡核苷酸有效地用作PCR模板,以再生未修饰的DNA。热变性实验表明,这些修饰在主凹槽中是可以容忍的。总体而言,这些经过大量修改的dNTP是SELEX的出色候选者。
A hypervalent iodine-promoted intermolecular diamination reactions of C60 with sulfamides or phosphoryl diamides affords two classes of novel C60-fused cyclic sulfamide or phosphoryl diamide derivatives. The reaction between C60 and sulfamides can be effectively controlled to selectively synthesize diamination products or azafulleroids under PhIO/I2 or PhI(OAc)2/I2 conditions, respectively. Moreover
C 60与磺酰胺或磷酰二酰胺的碘价促进的高价分子间胺化反应提供了两类新型的C 60稠合的环状磺酰胺或磷酰二酰胺衍生物。可以有效地控制C 60和磺酰胺之间的反应,以分别在PhIO / I 2或PhI(OAc)2 / I 2条件下选择性地合成电子化产物或氮杂富勒烯类化合物。而且,磷酰基二酰胺首先被用作烯化中的胺源。
Stereocontrolled synthesis of bicyclic ureas and sulfamides via Pd-catalyzed alkene carboamination reactions
作者:Nicholas R. Babij、Jordan R. Boothe、Grace M. McKenna、Ryan M. Fornwald、John P. Wolfe
DOI:10.1016/j.tet.2019.04.031
日期:2019.8
The synthesis of bicyclic ureas and sulfamides via palladium-catalyzed alkene carboamination reactions between aryl/alkenylhalides/triflates and alkenes bearing pendant cyclic sulfamides and ureas is described. The substrates for these reactions are generated in 3-5 steps from commercially available materials, and products are obtained in good yield with up to >20:1 diastereoselectivity. The stereochemical
Asymmetric Palladium-Catalyzed Alkene Carboamination Reactions for the Synthesis of Cyclic Sulfamides
作者:Zachary J. Garlets、Kaia R. Parenti、John P. Wolfe
DOI:10.1002/chem.201600887
日期:2016.4.18
The synthesis of cyclic sulfamides by enantioselective Pd‐catalyzed alkene carboamination reactions between N‐allylsulfamides and aryl or alkenyl bromides is described. High levels of asymmetric induction (up to 95:5 e.r.) are achieved using a catalyst composed of [Pd2(dba)3] and (S)‐Siphos‐PE. Deuterium‐labelling studies indicate the reactions proceed through syn‐aminopalladation of the alkene and
[EN] 1,1,1-TRIFLUORO-3-HYDROXYPROPAN-2-YL CARBAMATE DERIVATIVES AND 1,1,1-TRIFLUORO-4-HYDROXYBUTAN-2-YL CARBAMATE DERIVATIVES AS MAGL INHIBITORS<br/>[FR] DÉRIVÉS DE CARBAMATE DE 1,1,1-TRIFLUORO-3-HYDROXYPROPAN-2-YLE ET DÉRIVÉS DE CARBAMATE DE 1,1,1-TRIFLUORO-4-HYDROXYBUTAN-2-YLE COMME INHIBITEURS DE MAGL
申请人:PFIZER
公开号:WO2017021805A1
公开(公告)日:2017-02-09
The present invention provides, in part, compounds of Formula I and pharmaceutically acceptable salts thereof; processes for the preparation of; intermediates used in the preparation of; and compositions containing such compounds or salts, and their uses for treating MAGL-mediated diseases and disorders including, e.g., pain, an inflammatory disorder, traumatic brain injury, depression, anxiety, Alzheimer's disease, a metabolic disorder, stroke, or cancer.
Modular Synthesis of 1,2-Diamine Derivatives by Palladium-Catalyzed Aerobic Oxidative Cyclization of Allylic Sulfamides
作者:Richard I. McDonald、Shannon S. Stahl
DOI:10.1002/anie.200906342
日期:——
Allylic sulfamides undergo aerobic oxidativecyclization at room temperature, mediated by a Pd(O2CCF3)2/DMSO catalyst system in tetrahydrofuran. The cyclic sulfamide products are readily converted into 1,2‐diamines, and substrates derived from chiral allylic amines cyclize with very high diastereoselectivity.