Described herein are hydrogen sulfide (H
2
S) generating polymers and polymer systems suitable for coating or forming medical devices and methods for making and using the same. More specifically, described are H
2
S generating polymers comprising at least one thioamide group. The H
2
S generating polymers can provide controlled site-specific release of H
2
S once implanted at or within the target surgical site by hydrolysis of the thioamide group in physiological media. The H
2
S generating polymers can be coated onto a medical device, formed into a medical device or combined with one or more other polymers to form a polymer system. Also described are methods of treating restenosis and inflammation and promoting vasodilation utilizing such medical devices.
Conversion of amides and lactams to thioamides and thiolactams using hexamethyldisilathiane
作者:D. C. Smith、S. W. Lee、P. L. Fuchs
DOI:10.1021/jo00081a011
日期:1994.1
Amides and lactams were converted to their corresponding thioamides and thiolactams employing a new protocol using hexamethyldisilathiane (TMS(2)S). Oxophilic promoters were employed to generate Vilsmeier-type intermediates, the most efficient reagents being phosphorus oxychloride, triphosgene, and oxalyl chloride. Thionation of intermediate chloro iminium ions was accomplished in situ with TMS(2)S. Yields were good to excellent for secondary and tertiary amides and lactams while yields for primary systems were poor.
Sergeev, V. N.; Artamkin, S. A.; Pestunovich, S. V., Journal of general chemistry of the USSR, 1992, vol. 62, # 8, p. 1490 - 1497
作者:Sergeev, V. N.、Artamkin, S. A.、Pestunovich, S. V.、Albanov, A. I.、Voronkov, M. G.、Baukov, Yu. I.
DOI:——
日期:——
Smith D. C., Lee S. W., Fuchs P. L., J. Org. Chem., 59 (1994) N 2, S 348-354