Zobrazeno 1 - 10
of 143
pro vyhledávání: '"M. G. Safarov"'
Autor:
Sh. M. Salikhov, I. M. Biktagirov, Farid A. Valeev, L. Kh. Faizullina, M. G. Safarov, F. Z. Galin
Publikováno v:
Russian Journal of Organic Chemistry. 52:711-720
Diels-Alder adducts of levoglucosenone with 1,3-butadiene, piperylene, and isoprene, and also some of their derivatives undergo allylic oxidation with CrО3·2Py only in the case when the effect of a keto group or of another electron-acceptor group i
Publikováno v:
Russian Journal of Organic Chemistry. 51:1457-1463
Vicinal hydroxylation of the Diels-Alder adducts of levoglucosenone with buta-1,3-diene, penta- 1,3-diene, and cyclopentadiene by the action of sodium periodate or ozonolysis is accompanied by cleavage of the double bond, and intramolecular aldol rea
Autor:
Sh. M. Salikhov, L. Kh. Faizullina, M. G. Safarov, F. Z. Galin, M. M. Iskakova, I. M. Biktagirov, Farid A. Valeev
Publikováno v:
Russian Journal of Organic Chemistry. 51:576-581
Epoxidation of diastereoisomeric benzyloxy derivatives of the levoglucosenone adduct with cyclopentadiene by treatment with m-chloroperoxybenzoic acid afforded a mixture of 1,2- and 1,4-epoxy derivatives. Intramolecular cyclization of the hydroxy der
Publikováno v:
Russian Journal of Organic Chemistry. 50:1317-1322
4,4-Dimethyl-3-nitro-10,11-dioxatricyclo[6.2.1.02,6]undec-5-en-7-one possessing a bicyclic iridoid skeleton was synthesized in two steps from isolevoglucosenone which was obtained in turn from levoglucosenone through 4-benzyloxy-2-tosyloxy derivative
Autor:
I. M. Biktagirov, M. M. Iskakova, Sh. M. Salikhov, Farid A. Valeev, L. Kh. Faizullina, M. G. Safarov
Publikováno v:
Russian Journal of Organic Chemistry. 50:105-109
The Dieckmann condensation of 3,4-bis(methoxycarbonylmethyl) levoglucosenone derivative afforded two regioisomeric 9,11-dioxatricyclo[6.2.1.02,6]undecane derivatives at a ratio of 5: 3. The products can be used in the synthesis of iridoids.
Autor:
M. G. Safarov, Farid A. Valeev, Sh. M. Salikhov, A. A. Pershin, M. M. Iskakova, L. Kh. Faizullina
Publikováno v:
Russian Journal of Organic Chemistry. 48:456-459
2,2-Bis(nitromethyl)decane and 4-methyl-2,2-bis(nitromethyl)pentane reacted with α-bromolevoglucosenone in the presence of a base under ultrasonic treatment to give the corresponding cyclopenta-fused derivatives. Analogous reactions of 1,1-bis(nitro
Publikováno v:
Russian Journal of Organic Chemistry. 47:1750-1754
The possibility was studied of using levoglycosenone in the synthesis of N-(glucosen-2-yl) aminides. New glucosaminides were obtained containing the residues of L-a, isopinocampheol, borneol,, and (-)-(1S,2R,3S,7S,8R)-4,4-dimethyl-3-nitro-9,11-dioxat
Autor:
Yu. A. Kondrova, M. G. Safarov, V. S. Kolosnitsyn, Farid A. Valeev, L. Kh. Faizullina, Leonid V. Spirikhin
Publikováno v:
Russian Journal of Organic Chemistry. 47:914-919
Michael reactions of levoglucosenone and its α-bromo and α-iodo derivatives with α,ω-dinitroalkanes were studied under conditions of chemical and electrochemical generation of base. Procedures were developed for stereospecific fusion of a cyclope
Autor:
O. V. Shitikova, L. Kh. Kalimullina, Inna P. Tsypysheva, Farid A. Valeev, Sh. M. Salikhov, M. G. Safarov
Publikováno v:
Chemistry of Natural Compounds. 40:521-525
2-Amino derivatives of levoglucosenone were prepared by reaction of the 2-methanesulfonyl (or p-toluenesulfonyl) derivatives with ammonia, methylamine, or octylamine under various conditions. The analogous reaction did not occur for saturated derivat
Autor:
L. Kh. Kalimullina, O. V. Shitikova, M. G. Safarov, E. V. Gorobets, Mansur S. Miftakhov, Farid A. Valeev, G. Sh. Singizova, Inna P. Tsypysheva
Publikováno v:
Chemistry of Natural Compounds. 39:563-568
Regiospecific C55 -halogenation with retention of configuration occurred upon Beckman fragmentation of levoglucosenone oxime using SOCl2 or PBr3. On the other hand, the oxime of its dihydro derivative gave under these conditions the C6 - substitution