Abstract
A series of 4(x-substituted phenyl)-1,4-dihydropyridines (x=2—CF3 (1), 2-CH3 (2), 2-OCH3 (3) and 2,4-Cl (4)) with a new substituent, the N-methylcarbamoyl (CONHCH3) group at C3 and C5 are crystallographically characterized and a comparison has been made with important conformational parameters obtained theoretically. The dihydropyridine rings are in shallow boat conformation. The phenyl substituent orientation is synperiplanar. Both the carbonyl groups are oriented anticlinal in 1, 2 and 3; but in 4, one is synclinal and the other synperiplanar with the adjacent double bond. The presence of solvent molecules in 1 (CH3OH), 2 (CH3OH), and 3 (H2O) has significantly changed the hydrogen bonding pattern. Theoretical studies at the semiempirical AM1 MO level reproduces the general features of the structures. The near planarity of the DHP ring and the orientation of the phenyl substituent make 1 and 2 encouraging targets for pharmacological, study. Crystallographic Data:1: a = 8.793(2), b = 29.962(5), c = 8.215(2) Å, β = 115.28(2)°, Monoclinic, P21/c; 2: a = 8.799(2), b = 15.789(3), c = 14.074(2) Å, β = 100.25(2)°, Monoclinic, P21/n; 3: a = 8.347(1), b = 8.986(1), c = 13.749(2) Å, α = 97.50(1), β = 94.78(1), γ = 101.38(1)° Triclinic, P1¯4: a = 12.928(3), b = 14.506(3), c = 9.740(2) Å, Orthorhombic, Pca21.
Similar content being viewed by others
References
Janis, R.A.; Silver, F.J.; Triggle, D.J. Adv. Drug. Res. 1987, 16, 309.
Speeding, M.; Paoletti, R. Pharm. Rev. 1992, 44, 363.
Triggle, D.J.; Rampe, R. Trends Pharmacol. Sci. 1989, 10, 507.
Fleckenstein, A. Annu. Rev.Pharmacol. Toxicol. 1977, 17, 149.
Reuter, H. Nature 1983, 301, 569.
Janis, R.A.; Tiggle, D.J. J. Med. Chem. 1983, 26, 775.
Schramm, M.; Thomas, G.; Towart, R.; Franckowiak, G. Nature 1983, 303, 535.
Troug, A.G. Presentation at the 67th Annual Meeting of The federation of American Societies for Experimental Biology, Chicago, 1983.
Langs, D.A.; Triggle, D.J. Mol. Pharmacol. 1985, 27, 544.
Loev, B.; Goodman, M.M.; Snader, K.M.; Tedeschi, R.; Macko, E. J. Med. Chem. 1974, 17, 956.
Coburn, R.A.; Wierzba, M.; Suto, M.J.: Solo, A.J.; Triggle, A.M.; Triggle, D.J. J. Med. Chem. 1988, 31, 2103.
Goldmann, S.; Stoltefuss, J. Angew. Chem. Int. Ed. Engl. 1991, 30, 1559.
Triggle, D.J.; Langs, D.A.; Janis, R.A. Med. Res. Rev. 1989, 9, 123.
Fossheim, R. J. Med. Chem. 1986, 29, 305.
Mahmoudian, M.; Richards, W.G. J. Pharm. Pharmacol. 1986, 38, 272.
Mahmoudian, M.; Richards, W.G. J. Chem. Soc. Commun. 1986, 739.
Sadanandam, Y.S.; Shetty, M.M.; Reddy, K.R.M.; Leelavati, P. Eur. J. Med. Chem. 1994, 29, 975.
Sheldrick, G.M. SHELXTL-Plus Revision 4.11/V. Siemens Analytical X-ray Instruments, Inc.: Madison, WI, 1991.
Nardelli, M. Comput. Chem. 1983, 7, 95.
Fossheim, R.; Svarteng, K.; Mostad, A.; Romming, C.; Shefter, E.; Triggle, D.J. J. Med. Chem. 1982, 25, 126.
Fossheim, R.; Acta Chem. Scand. 1985, B39, 785.
Duax, W.L.; Norton, D.A. Atlas of Steroid Structure, Vol. II; New York: Plenum, 1975.
Triggle, A.M.; Shefter, E.; Triggle, D.J. J. Med. Chem. 1980, 23, 1442.
Stewart, J.J.P. MOPAC 93.00 Manual; Fujitsu Limited: Tokyo, Japan, 1993.
Ishida, M.; Hamada, T.; Fujishita, Y.; Saito, Y.; Ohkubo, K. Bull. Chem. Soc. Jpn. 1993, 66, 714.
Present work.
Fonesca, I.; Martinez-Carrera, S.; Garcia-Blanco, S. Acta Crystallogr. 1986, C42, 1792.
Rowan, K.R.; Holt, E.M. Acta Crystallogr. 1996, C52, 1565.
Rowan, K.R., Holt, E.M. Acta Crystallogr. 1996, C52, 2207.
Mehdi, S.; Ravikumar, K. Acta Crystallogr. 1992, C48, 1627.
Palmer, R.B.; Anderson, N.H. Bioorg. Med. Chem. Lett. 1996, 18, 2173.
Hempel, A.; Gupta, M.P. Acta Crystallogr. 1978, B34, 3815.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Sagar, M.B., Ravikumar, K., Mehdi, S. et al. X-ray crystallographic and theoretical studies of substituted phenyl 3,5-di[N-methyl] carbamoyl-1,4-dihydropyridines: Targets for Ca2+ antagonist. Journal of Chemical Crystallography 29, 481–491 (1999). https://doi.org/10.1023/A:1009579430593
Issue Date:
DOI: https://doi.org/10.1023/A:1009579430593