The total synthesis of (+/-)-brasiliquinone B has been achieved via a Friedel-Crafts alkylation approach. In contrast, a Friedel-Crafts acylation approach for the synthesis of (+/-)-brasiliquinone B resulted in formation of A ring aromatized tetracyclic products. (C) 2002 Published by Elsevier Science Ltd.
PROCESSES FOR PREPARING (R)-2-METHYLPYRROLIDINE AND (S)-2-METHYLPYRROLIDINE AND TARTRATE SALTS THEREOF
申请人:Christie Michael
公开号:US20100121055A1
公开(公告)日:2010-05-13
The present invention provides a short, safe, inexpensive, commercially scalable process for preparing (R)- or (S)-2-methylpyrrolidine from 2-methylpyrroline, which does not require the isolation of synthetic intermediates.
PYRAZOLES FOR THE TREATMENT OF OBESITY AND OTHER CNS DISORDERS
申请人:Bennani Youssef L.
公开号:US20110112088A1
公开(公告)日:2011-05-12
This invention relates to compounds of the formula:
to compositions containing these compounds, and to methods of treatment employing the compounds and compositions.
本发明涉及以下公式的化合物:含有这些化合物的组合物以及使用这些化合物和组合物的治疗方法。
Convenient Synthesis of NCS−Chromophore Metabolite Isosteres: Binding Agents for Bulged DNA Microenvironments
作者:Yiqing Lin、Graham B. Jones、Geum-Sook Hwang、Lizzy Kappen、Irving H. Goldberg
DOI:10.1021/ol0400591
日期:2005.1.1
A designed molecule with capacity to bind DNA bulges (20) has been prepared from readily available starting materials. The spirocyclic template was modeled on a metabolite of neocarzinostatin chromophore (NCSi-gb) and is equipped with functionality to enable convenient bioassay. Preliminary studies confirm binding at specific bulged sequences and induction of polymerase-mediated slippage events. The target compound offers a convenient means to study affinity for unique bulged motifs and for use as a molecular biology reagent.
A New Class of Non-<i>C</i><sub>2</sub>-Symmetric Ligands for Oxidative and Redox-Neutral Palladium-Catalyzed Asymmetric Allylic Alkylations of 1,3-Diketones
作者:Barry M. Trost、Etienne J. Donckele、David A. Thaisrivongs、Maksim Osipov、James T. Masters
DOI:10.1021/jacs.5b00786
日期:2015.2.25
We report the discovery, synthesis, and application of a new class of non-C-2-symmetric phosphoramidite ligands derived from pyroglutamic acid for use in both oxidative and redox-neutral palladium-catalyzed asymmetric allylic alkylations of 1,3-diketones. The resulting chiral products are typically obtained in high yield with good to excellent levels of enantioselectivity.
First total synthesis of (±)-brasiliquinone B
作者:Mahesh L. Patil、Hanumant B. Borate、Datta E. Ponde、Baburao M. Bhawal、Vishnu H. Deshpande
DOI:10.1016/s0040-4039(99)00766-2
日期:1999.6
Brasiliquinone B (2) was synthesized from 7-methoxy-1-tetralone in 8 steps making use of Friedel-Crafts alkylation as a key step. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.