Diastereoselective Reduction of Alkenylboronic Esters as a New Method for Controlling the Stereochemistry of up to Three Adjacent Centers in Cyclic and Acyclic Molecules
摘要:
[GRAPHIC]cis-Boronates are readily available via a diastereoselective Pd-catalyzed reduction of tetrasubstituted alkenylboronic esters using H-2. Applying the reaction conditions presented to unsaturated open-chain boronic esters allows the stereochemistry of up to three adjacent centers to be controlled.
Preparation of Alkylmagnesium Reagents from Alkenes through Hydroboration and Boron-Magnesium Exchange
作者:Markus A. Reichle、Bernhard Breit
DOI:10.1002/anie.201201704
日期:2012.6.4
Tolerant: Alkylmagnesium reagents can be synthesized from alkenes through a sequence of hydroboration and subsequent boron–magnesium exchange using a method that tolerates different functional groups (see scheme). The resulting alkylmagnesium reagents can be used in carbon–carbon bond forming reactions, such as alkylation reactions or transition‐metal‐catalyzed cross‐coupling reactions.
I(III)-Catalyzed Oxidative Cyclization–Migration Tandem Reactions of Unactivated Anilines
作者:Tianning Deng、Emily Shi、Elana Thomas、Tom G. Driver
DOI:10.1021/acs.orglett.0c03497
日期:2020.11.20
An I(III)-catalyzed oxidative cyclization–migration tandem reaction using Selectfluor as the oxidant was developed that converts unactivated anilines into 3H-indoles is reported herein. The reaction requires as little as 1 mol % of the iodocatalyst and is mild, tolerating pyridine and thiophene functional groups, and the dependence of the diastereoselectivity of the process on the identity of the iodoarene
The present invention provides 2,6,7,8 Substituted Purines as described herein or a pharmaceutically acceptable salt thereof. The representative compounds are useful as inhibitors of the HDM2 protein. Also disclosed are pharmaceutical compositions comprising the above compounds and potential methods of treating cancer using the same.