140111-52-0Relevant articles and documents
Stereoselective Conjugate Addition of the Lithium Anion of N-Allyl Imine to Unsaturated Esters: Application to the Enantiospecific Total Synthesis of (-)-Epibatidine
Prasad, Kavirayani R.,Uphade, Manoj B.
, p. 9648 - 9660 (2019/08/20)
A regio- and diastereoselective conjugate addition of the lithium anion of N-allyl imine (prepared from allylamine and benzophenone) to α,β-unsaturated esters in good yields is reported. The reaction was general and provided the γ-amino esters resulting from the regioselective C-C bond formation between the α-carbon to the nitrogen in the imine and the β-carbon of the unsaturated ester. Synthetic utility of the formed products was illustrated in the nonracemic total synthesis of the bioactive alkaloid (-)-epibatidine.
Synthesis of (-)-epibatidine
Chiou, Wen-Hua,Chiang, Yu-Min
, p. 11444 - 11446 (2014/03/21)
An asymmetric synthesis to the dendrobatid alkaloid (-)-epibatidine has been described, featuring chiral resolution of both optically pure 7-azabicyclo[2.2.1]heptanecarboxylic acid, and subsequent transformations to (-)-epibatidine. The methodology provides a flexible access to various substituted chiral epibatidine analogues.
The amino thiourea-catalyzed asymmetric nucleophilic reactions
Takemoto, Yoshiji,Miyabe, Hideto
, p. 269 - 275 (2008/02/06)
Bifunctional amino thiourea-catalyzed asymmetric additions of several nucleophiles into electron-deficient unsaturated compounds such as nitroolefins, α,β-unsaturated imides, imines, and azodicarboxylates are described. We discovered that bifunctional thi
Enantioselective tandem Michael reaction to nitroalkene catalyzed by bifunctional thiourea: Total synthesis of (-)-epibatidine
Hoashi, Yasutaka,Yabuta, Takaya,Yuan, Pei,Miyabe, Hideto,Takemoto, Yoshiji
, p. 365 - 374 (2007/10/03)
Successive treatment of γ,δ-unsaturated β-ketoesters and nitroalkenes with a bifunctional thiourea and TMG promoted the tandem Michael addition, giving rise to highly functionalized cyclohexanones in good yields. The three contiguous stereogenic centers o
Enantioselective α-arylation of cyclohexanones with diaryl iodonium salts: Application to the synthesis of (-)-epibatidine
Aggarwal, Varinder K.,Olofsson, Berit
, p. 5516 - 5519 (2007/10/03)
(Chemical Equation Presented) Short cut: Direct asymmetric α-arylation of prochiral ketones has been effected using chiral lithium amide bases and diaryl iodonium salts. The methodology has been employed in a short total synthesis of the alkaloid (-)-epibatidine (see scheme).
LIGANDS FOR NICOTINIC ACETYLCHOLINE RECEPTORS, AND METHODS OF MAKING AND USING THEM
-
Page 82, (2010/02/10)
One aspect of the present invention relates to heterocyclic compounds that are ligands for nicotinic acetylcholine receptors. A second aspect of the invention relates to the use of a compound of the invention for modulation of a mammalian nicotinic acetylcholine receptor. The present invention also relates to the use of a compound of the invention for treating a mammal suffering from Alzheimer's disease, Parkinson's disease, dyskinesias, Tourette's syndrome, schizophrenia, attention deficit disorder, anxiety, pain, depression, obsessive compulsive disorder, chemical substance abuse, alcoholism, memory deficit, pseudodementia, Ganser's syndrome, migraine pain, bulimia, obesity, premenstrual syndrome or late luteal phase syndrome, tobacco abuse, post-traumatic syndrome, social phobia, chronic fatigue syndrome, premature ejaculation, erectile difficulty, anorexia nervosa, disorders of sleep, autism, mutism or trichtillomania.
Bifunctional thiourea-catalyzed enantioselective double Michael reaction of γ,δ-unsaturated β-ketoester to nitroalkene: Asymmetric synthesis of (-)-epibatidine
Hoashi, Yasutaka,Yabuta, Takaya,Takemoto, Yoshiji
, p. 9185 - 9188 (2007/10/03)
The asymmetric synthesis of 4-nitrocyclohexanone derivatives has been accomplished by enantioselective double Michael additions of γ,δ-unsaturated β-ketoesters to nitroalkenes using a catalytic amount of bifunctional thiourea and TMG. The three contiguous
Synthesis of (-)-epibatidine
Evans, David A.,Scheidt, Karl A.,Downey, C. Wade
, p. 3009 - 3012 (2007/10/03)
matrix presented The synthesis of (-)-epibatidine has been accomplished utilizing a highly exo-selective asymmetric hetero Diels-Alder reaction. The key steps employed to transform the resulting bicycle into the natural product include a fluoride-promoted fragmentation and a Hofmann rearrangement.
A stereocontrolled route to (-)-epibatidine using a chiral cis-cy clohexadiene-1, 4-diol equivalent
Nakashima, Hiromi
, p. 1405 - 1406 (2007/10/03)
A concise diastereo- and enantio-controlled synthesis of (-)-epibatidine, the potent analgesic alkaloid from an Ecuadoran poison frog, Epipedobates tricolor, has been developed starting with a synthetic equivalent of chiral cw-cyclohexadiene-1, 4-diol. Th
Asymmetric total synthesis of (-)-epibatidine
Aoyagi, Sakae,Tanaka, Ryuta,Naruse, Masaichi,Kibayashi, Chihiro
, p. 4513 - 4516 (2007/10/03)
An enantioselective approach to (-)-epibatidine based on asymmetric hetero Diels-Alder cycloaddition with an N-acylnitroso dienophile bearing 8- (2-naphthyl)menthol as a chiral source, wherein π-π stacking interaction between the naphthyl and nitrosocarbonyl groups may contribute to facial control, is described.