Gary Johansson
Uppsala University
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Featured researches published by Gary Johansson.
Progress in Brain Research | 1996
Gunnar Nordvall; Björn M. Nilsson; S. Sundquist; Gary Johansson; G. Glas; L. Nilvebrant; Uli Hacksell
Publisher Summary This chapter examines a variety of C-5 substituted analogs in an attempt to determine what physicochemical properties influence the M 1 receptor affinity. The new compounds are tested in receptor binding and functional assays as previously reported. A series of achiral muscarinic antagonists with structures related chiral quinuclidine derived agonists. The most potent antagonist is the 2-benzofuranyl derivative. Replacing the 2-benzofuranyl with a 3-benzofuranyl-, furanyl-, thienyl-, 2- or 3-benzothienyl, or a 2-benzoxazolyl moiety gives less potent antagonists. In general, the antagonists display low selectivity for the investigated muscarinic receptor subtypes (M 1 , M 2 and M 3 ). An analysis of the structure-affinity relationships among the benzo-fused five-membered heteroaromatic analogs demonstrates that the magnitude of the negative electrostatic potential in the benzene moiety correlates with M 1 receptor affinity. In an attempt to determine what physicochemical properties of the substituted benzofuran derivatives influence the M 1 -receptor affinity, the chapter performs a QSAR analysis of the 9 derivatives.
Life Sciences | 1995
Uli Hacksell; Björn M. Nilsson; Gunnar Nordvall; Gary Johansson; Staffan Sundquist; Lisbeth Nilvebrant
A series of achiral 3-heteroaryl substituted quinuclidin-2-ene derivatives and related compounds have been synthesized by facile methods. The compounds were evaluated for muscarinic and antimuscarinic properties in receptor binding studies using (-)-[3H]-QNB as the radioligand and in a functional assay using isolated guinea pig urinary bladder. 3-(2-Benzofuranyl)-quinuclidin-2-ene (15) displayed the highest M1-receptor affinity in the present series (Ki = 9.6 nM).
Archive | 2007
Peter Brandt; Gary Johansson; Lars Johansson; Tobias Koolmeister; Bjoern M. Nilsson; Teresa Sandvall; Michael Weber
Archive | 2002
Katarina Beierlein; Ulf Bremberg; Patrizia Caldirola; Jensen Annika Jenmalm; Gary Johansson; Andrew Mott; Lars Tedenborg; Markus Thor
Archive | 1993
Gunilla Glas; Uli Hacksell; Gary Johansson; Bj orn Nilsson; Lisbeth Nilvebrant; Gunnar Nordvall
Archive | 2002
Patrizia Caldirola; Ulf Bremberg; Annika Jensen; Gary Johansson; Andrew Mott; Lori Sutin; Jan Tejbrant
Archive | 2001
Patrizia Caldirola; Gary Johansson; Bjoern M. Nilsson
Journal of Medicinal Chemistry | 1996
Gunnar Nordvall; Staffan Sundquist; Gary Johansson; Gunilla Glas; Lisbeth Nilvebrant; Uli Hacksell
Archive | 2004
Gary Johansson; Peter Brandt; Bjoern M. Nilsson
Archive | 2004
Gary Johansson; Peter Brandt; Graeme J. Dykes; Bjoern M. Nilsson