title: Structure-activity relationships of antiarrhythmic agents: crystal structure of amiodarone hydrochloride and two derivatives, and their conformational comparison with thyroxine.
abstract: Amiodarone.HCl (I), 2-butyl-3-benzofuranyl 4-[2-(diethylamino)ethoxy]-3,5-diiodophenyl ketone hydrochloride, C25H30I2NO3+.Cl-, Mr = 680.78, monoclinic, P2(1)/c, a = 17.124 (2), b = 17.079 (2), c = 9.162 (1) A, beta = 98.37 degrees, V = 2651.2 A3, Z = 4, Dx = 1.71 g cm-3, lambda(Mo K alpha) = 0.7107 A, mu = 24.73 cm-1, F(000) = 1332, T = 294 K, R = 6.6% for 5515 data; desethyl-amiodarone.HCl (II), 2-butyl-3-benzofuranyl 4-[2-(ethylamino)ethoxy]-3,5-diiodophenyl ketone hydrochloride, C23H26I2NO3+.Cl-, Mr = 654.74, monoclonic, P2(1)/c, a = 23.867 (2), b = 10.134 (1), c = 10.287 (2) A, beta = 93.91 (2) degrees, V = 2482.5 A3, Z = 4, Dx = 1.75 g cm-3, lambda(Mo K alpha) = 0.07107 A, mu = 26.37 cm-1, F(000) = 1276, T = 294 K, R = 5.7% for 5916 data; benziodarone (III), 2-ethyl-3-benzofuranyl 4-hydroxy-3,5-diiodophenyl ketone, C17H12I2O3, Mr = 518.09, monoclinic, P2(1)/n, a = 17.564 (2), b = 8.294 (1), c = 11.587 (2) A, beta = 93.20 (2) degrees, V = 1685.55 A3, Z = 4, Dx = 2.04 g cm-3, lambda(Mo K alpha) = 0.7101 A, mu = 36.99 cm-1, F(000) = 976, T = 294 K, R = 6.2% for 4311 data.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Medical Foundation of Buffalo Inc., New York 14203.
authors.forename: V
authors.initials: V
authors.lastname: Cody
authors.forename: J
authors.initials: J
authors.lastname: Luft
mesh_terms: D000638:Amiodarone / Q000031:analogs & derivatives / Q000494:pharmacology; D000889:Anti-Arrhythmia Agents / Q000494:pharmacology; D001572:Benzofurans / Q000494:pharmacology; D008968:Molecular Conformation; D013237:Stereoisomerism; D013329:Structure-Activity Relationship; D013974:Thyroxine
chemical_list: D000889:Anti-Arrhythmia Agents; D001572:Benzofurans; C058702:benziodarone; C036116:desethylamiodarone; D000638:Amiodarone; D013974:Thyroxine