Synthesis of Analogues of (−)-Cytisine for in Vivo Studies of Nicotinic Receptors Using Positron Emission Tomography
摘要:
9-Substituted analogues of (-)-cytisine were synthesized in high yields via palladium-mediated couplings of either 9- (-)-bromocytisine and organostannanes or 9-(-) trimethylstannylcytisine and fluorobromobenzene. The protection of the amine with a nitroso group and the use of PdCl2(PPh3)(2) to carry out the Stille reaction allowed the rapid synthesis of 9-(4'-[F-18]fluorophenyl)cytisine (F-18: t(1/2) = 109.7 min), a new promising radioligand (radiochemical yield: 10% from [F-18]KF, 150 min, four steps) for positron emission tomography studies of alpha(4)beta(2) nicotinic receptors.
(S)-5-ETHYNYL-ANABASINE, DERIVATIVES THEREOF, AND RELATED COMPOSITIONS AND METHODS OF MAKING AND USING
申请人:IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC.
公开号:US20180139961A1
公开(公告)日:2018-05-24
(S)-5-ethynyl-anabasine and derivatives thereof; composition comprising same and a carrier; methods of treating an animal; method of protecting a plant from a pest; and methods of making compound and derivatives.
(-)-9-Fluorocytisine, (-)-9-methylcytisine and (-)-9-trifluoromethylcytisine were synthesized from the natural product (-)-cytisine. 9-Methyl and 9-trifluoromethyl cytisines display a remarkable affinity at the alpha(4)beta(2) nicotinic receptor subtype (0.2 nM) with a high selectivity versus the alpha(7) nAChR subtype. Comparison of the affinity values suggests that the size of the substituent at the 9 position of (-)-cytisine seems more important than electronic factors for efficient binding and selectivity at alpha(4)beta(2) nAChRs. (C) 2010 Elsevier Ltd. All rights reserved.
New 12-N-β-Hydroxyethylcytisine Derivatives with Potential Antiarrhythmic Activity
作者:I. P. Tsypysheva、A. V. Koval’skaya、I. U. Khalilova、Yu. Yu. Bakhtina、R. Yu. Khisamutdinova、S. F. Gabdrakhmanova、A. N. Lobov、F. S. Zarudii、M. S. Yunusov
DOI:10.1007/s10600-014-0945-5
日期:2014.5
12-N-β-Hydroxyethylcytisine derivatives containing Cl, Br, and nitro groups on the 2-pyridone core were synthesized. Their antiarrhythmic activity was studied in vivo.
Conjugates of 9- and 11-Halo-Substituted Cytisines with 1′-N-Methylurocanic Acid
作者:P. R. Petrova、A. V. Koval’skaya、A. N. Lobov、I. P. Tsypysheva
DOI:10.1007/s10600-019-02905-2
日期:2019.11
New (–)-cytisinederivatives were synthesized by conjugating 9- and 11-halo-substituted cytisines with 1′-N-methylurocanic acid using N-hydroxysuccinimide.
(S)-5-ethynyl-anabasine, derivatives thereof, and related compositions and methods of making and using
申请人:IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC.
公开号:US10667515B2
公开(公告)日:2020-06-02
(S)-5-ethynyl-anabasine and derivatives thereof; composition comprising same and a carrier; methods of treating an animal; method of protecting a plant from a pest; and methods of making compound and derivatives.