Construction of a quaternary carbon at the carbonyl carbon of the cyclohexane ring
作者:Yuki Kaneko、Yohei Kiyotsuka、Hukum P. Acharya、Yuichi Kobayashi
DOI:10.1039/c0cc00653j
日期:——
High S(N)2' selectivity in the allylicsubstitution of cyclohexylidene ethyl picolinates with copper reagents prepared from RMgBr and CuBr.Me(2)S was realized by addition of ZnX(2) (X = I, Br, Cl). Furthermore, ZnX(2) accelerated the reaction with the bulky iPr reagent.
Tandem Michael−Wittig−Horner Reaction: One-Pot Synthesis of δ-Substituted α,β-Unsaturated Carboxylic Acid Derivatives − Application to a Concise Synthesis of (Z)- and (E)-Ochtoden-1-al
A new tandem Michael−Wittig−Horner reaction has been developed to produce in high yields δ-substituted α,β-unsaturated esters, amides and lactones. The reaction has been successfully applied to a concise synthesis of (E)- and (Z)-ochtoden-1-als, components of the male sex pheromone of boll weevil from 3-methylcyclohex-2-en-1-one.
A Rh(III)-Catalyzed Formal [4+1] Approach to Pyrrolidines from Unactivated Terminal Alkenes and Nitrene Sources
作者:Sumin Lee、Honghui Lei、Tomislav Rovis
DOI:10.1021/jacs.9b07012
日期:2019.8.14
formal [4+1] approach to pyrrolidines from readily available unactivated terminalalkenes as 4-carbon partners. The reaction provides a rapid construction of various pyrrolidine containing structures, especially for the diastereoselective synthesis of spiro-pyrrolidines. Mechanistic investigation suggests a Rh(III)-catalyzed intermolecular aziridination of the alkene and subsequent acid-promoted ring expansion
Natural product mayamycin is the first example in the angucycline class featuring a C‐glycoside linkage at the C5‐position of the benz[a]anthracenone core with remarkable biological activities. We successfully synthesized the two retrosynthetic fragments, but found that the final C‐glycosylation did not occur. Alternatively, an A‐ring saturated aglycon was prepared, but the proposed C‐glycosylation
天然产物玛雅霉素是安古霉素类中的第一个例子,在苯并[ a ]蒽环酮核心的C5位具有C-糖苷键,具有显着的生物活性。我们成功合成了两个逆合成片段,但发现最终的C糖基化没有发生。另外,还可以准备一个A环饱和糖苷配基,但建议的C-糖基化反应仍未进行。最后,使用简化的底物,随后的C糖基化顺利进行,从而减少了两环的玛雅霉素类似物。
Cycloalkylamides and their therapeutic applications
申请人:——
公开号:US20040077618A1
公开(公告)日:2004-04-22
The present invention relates to the use of compounds of formula (I)
1
for the treatment of a variety of disorders including, but not limited to, epilepsy, bipolar disorder, psychiatric disorders, migraine, pain, neuroprotection, and movement disorders.