5-, 6- or 7-Membered fully saturated 1-azacarbocyclic-2-ylidene derivatives of guanidine having anti-secretory and hypoglycemic activities, and further useful for treatment of cardiovascular disease states.
Improved Procedures for the Preparation of Cycloalkyl-, Arylalkyl-, and Arylthioureas
作者:C. R. Rasmussen、F. J. Villani, Jr.、L. E. Weaner、B. E. Reynolds、A. R. Hood、L. R. Hecker、S. O. Nortey、A. Hanslin、M. J. Costanzo、E. T. Powell、A. J. Molinari
DOI:10.1055/s-1988-27605
日期:——
An improved procedure for the preparation of arylthioureas consists of the reaction of benzoyl isothiocyanate with anilines in acetone and debenzoylation of the resultant N-aryl-N′-benzoylthioureas with 5% aqueous sodium hydroxide. Bicycloalkylthioureas and N-(arylalkyl)thioureas (e.g., 9H-9-fluorenylthiourea) are directly prepared from the corresponding isothiocyanates and ammonia.
A Versatile Synthesis of Novel<i>N</i>,<i>N</i>,<i>N</i>″-Trisubstituted Guanidines
作者:C. R. Rasmussen、F. J. Villani, Jr.、B. E. Reynolds、J. N. Plampin、A. R. Hood、L. R. Hecker、S. O. Nortey、A. Hanslin、M. J. Costanzo、R. M. Howse, Jr.、A. J. Molinari
DOI:10.1055/s-1988-27606
日期:——
N,N,N″-Trisubstituted guanidines (most of them N″-aryl-N-azacycloalkanecarboximidamides) are prepared in generally good yields by S-methylation of monosubstituted thioureas with methyl iodide in methanol or acetone and reaction of the resultant methyl carbamimidothioate hydroiodides with secondary amines in boiling tert-butyl alcohol or acetonitrile.