Ethenolate Transfer Reactions: A Facile Synthesis of Vinyl Esters
作者:Srinivasan Kaliyaperumal Appaye、Satish Pandurang Nikumbh、Rajeshwar Reddy Govindapur、Shyamapada Banerjee、Dinesh S. Bhalerao、Unniaran K. Syam Kumar
DOI:10.1002/hlca.201300396
日期:2014.8
and efficient metal‐free ethenolate transfer reaction has been elaborated in moderate‐to‐high yields from vinyl acetate. This reaction was accomplished by generation of potassium ethenolate, which was then reacted with homo and mixed anhydrides of aliphatic, aryl and heteroaryl acids, to yield the corresponding vinylesters. The utility of thus generated vinylesters was then probed by carrying out intramolecular
Synthesis of certain unsubstituted, 9-exo-(dialkylaminomethyl)-, and 9-endo-(aralkyl)-tricyclo[5.2.1.02,6]decane-8-ketoxime esters and ethers with local anesthetic and analgesic activities
作者:M.Nabil Aboul-Enein、Aida El-Azzouny、Nevine A. Abdallah、Yousreya A. Maklad、Ola A. Saleh、M.Y. Ebeid
DOI:10.1016/s0014-827x(98)00008-1
日期:1998.3
The synthesis of series of unsubstituted, 9-exo-(dialkylaminomethyl)-, and 9-endo-(aralkyl)tricyclo [5.2.1.0(2,6)]decane-8-ketoximes esters and ethers 3a-j, 3a-d, 7a-j and 13a-d from the oxime synthons 2, 6a-e, 12a and 12b, respectively, is described. All the obtained compounds displayed noticeable local anesthetic potential. Among them, the oximino ether 4d (ED50 = 0.15 mg/kg) and the oximino ester 3a (ED50 = 0.23 mg/kg) are the most active of the series and possess higher potential than the reference standards. Some of the target compounds evoked analgesic effect, specially the oximino ether 7i which is the most potent of the series and is stronger than acetylsalicylic acid but weaker than morphine hydrochloride. (C) 1998 Elsevier Science S.A. All rights reserved.