Abstract Enzymatic transesterification of dl -menthol with vinyl acetate in tert -Butyl methyl ether (TBME) catalyzed by Candidacylindracealipase (CCL) was carried out in the presence of cinchona alkaloid as additive. The effects of various reaction parameters, such as lipase nature and loading, acylating agent, molecular sieves, solvents and various additives, on the reactivity as well as on the
Polyphenols with Anti-Inflammatory Properties: Synthesis and Biological Activity of Novel Curcumin Derivatives
作者:Yisett González、Randy Mojica-Flores、Dilan Moreno-Labrador、Luis Cubilla-Rios、K. S. Jagannatha Rao、Patricia L. Fernández、Oleg V. Larionov、Johant Lakey-Beitia
DOI:10.3390/ijms24043691
日期:——
Herein, we describe the synthesis and evaluation of anti-inflammatoryactivities of new curcumin derivatives. The thirteen curcumin derivatives were synthesized by Steglich esterification on one or both of the phenolic rings of curcumin with the aim of providing improved anti-inflammatoryactivity. Monofunctionalized compounds showed better bioactivity than the difunctionalized derivatives in terms
An Extremely Powerful Acylation Reaction of Alcohols with Acid Anhydrides Catalyzed by Trimethylsilyl Trifluoromethanesulfonate
作者:Panayiotis A. Procopiou、Simon P. D. Baugh、Stephen S. Flack、Graham G. A. Inglis
DOI:10.1021/jo980011z
日期:1998.4.1
Trimethylsilyl trifluoromethanesulfonate is an excellent catalyst for the acylation of alcohols with acid anhydrides. Highly functionalized primary, secondary, tertiary, and allylic alcohols, and phenols, were acylated cleanly and efficiently and in a fraction of the time used under the standard DMAP conditions.
Pickard; Littlebury, Journal of the Chemical Society, 1912, vol. 101, p. 116
作者:Pickard、Littlebury
DOI:——
日期:——
Asymmetric Induction via Metalation of Succinic Esters and Amide Using S(+) Menthol and R(+) 1-Phenylethylamine as Chiral Auxiliaries
作者:Auj e Sana、Sher W. Khan、Nida Ambreen、Muhammad Arfan、Javid H. Zaidi、Khalid M. Khan、Shahnaz Perveen、Ghulam A. Miana
DOI:10.2174/157017812803521072
日期:2012.10.1
The synthesis of chiral esters and amides with the involvement of asymmetric induction by using pure chiral
auxiliaries such as (1S, 2R, 5R) menthol and L-(+)-1-phenylethylamine is described. The chiral mono, di menthol esters
and mono amides of succinic acid were synthesized in good yields. These esters and amides were then subjected to metalation
and quenched with different alkyl halides to get α substitution to generate a new chiral center.