Benzofused heterocycles containing a sulfur moiety possess many biological activities across a wide therapeutic fields, including vasodilator, [ 1 1. Qar , J. ; Barhanin , J. ; Romey , G. ; Henning , R. ; Lerch , U. ; Oekonomopulos , R. ; Urbach , H. ; Lazdunski , M. A novel high affinity class of Ca2+ channel blockers . Mol. Pharmacol. 1988 , 33 , 363 – 369 . ... View all references ] antidiabetic, [ 2 2. Matasui , T. ; Nakamura , Y. ; Ishikawa , H. ; Matsuura , A. ; Kobayashi , ...