Disclosed are huperzine A prodrugs and method of synthesis thereof. The invention further relates to methods of treating, preventing or reversing neurodegenerative diseases, such as, Alzheimer's Disease and neuronal dysfunctions, such as, memory impairment using a pharmaceutical composition comprising a huperzine A prodrug as disclosed herein.
揭示了Huperzine A 前药及其合成方法。本发明还涉及使用包含本文所述的 Huperzine A 前药的药物组合物治疗、预防或逆转神经退行性疾病,如阿尔茨海默病和神经功能障碍,如记忆障碍的方法。
Reusable ionic liquid-catalyzed oxidative esterification of carboxylic acids with benzylic hydrocarbons via benzylic Csp<sup>3</sup>–H bond activation under metal-free conditions
作者:Fen Mou、Yadong Sun、Weiwei Jin、Yonghong Zhang、Bin Wang、Zhiqing Liu、Lei Guo、Jianbin Huang、Chenjiang Liu
DOI:10.1039/c7ra02788e
日期:——
A metal-free protocol for the direct oxidativeesterification of the Csp3–H bond in benzylic hydrocarbons with carboxylic acids using heterocyclic ionic liquid as catalyst has been reported. The catalyst 1-butylpyridinium iodide could be easily recycled and reused for at least four cycles without obvious loss of catalytic activity.
Benzoyl peroxide–imidazole: a novel and efficient reagent for the mild conversion of alcohols or phenols into benzoates
作者:Najmeh Nowrouzi、Seyedeh Zahra Alizadeh
DOI:10.1016/j.tetlet.2013.02.101
日期:2013.5
A very mild, one-pot, and expedient protocol for the conversion of alcohols and phenols into their corresponding benzoates using imidazole and benzoyl peroxide as a novel reagent is described.
Fe-Catalyzed Aerobic Oxidative C–CN Bond Cleavage of Arylacetonitriles Leading to Various Esters
作者:Weiguang Kong、Bingnan Li、Xuezhao Xu、Qiuling Song
DOI:10.1021/acs.joc.6b01594
日期:2016.9.16
Fe-catalyzed aerobic oxidative esterifications of arylacetonitriles with alcohols, tri alkoxsilanes, silicate esters, or borate esters have been developed. The acyl groups which were in situ generated via chemoselective C(CO)-CN bond cleavage were directly used as electrophiles, leading to corresponding aryl esters in good to excellent yields under molecular oxygen when attacked by alcohols or alcohol
5,5′-Dimethyl-3,3′-azoisoxazole as a new heterogeneous azo reagent for esterification of phenols and selective esterification of benzylic alcohols under Mitsunobu conditions
3′-azoisoxazole is used as a new efficient heterogeneous azo reagent for the highly selective esterification of primary and secondary benzylic alcohols and phenols with aliphatic and aromatic carboxylic acids via Mitsunobu protocols. The reaction is highly selective for primary benzylic alcohols versus secondary ones, aliphatic alcohols and also phenols. The isoxazole hydrazine byproduct can be simply isolated