Optically Active Antifungal Azoles. III. Synthesis and Antifungal Activity of Sulfide and Sulfonamide Derivatives of (2R,3R)-2-(2,4-Difluorophenyl)-3-mercapto-1- (lH-1,2,4-triazol-1-yl)-2-butanol.
An azole compound represented by the formula (I):
wherein X is a nitrogen atom or CH; Ar is a substituted phenyl group; R¹ and R² independently are a hydrogen atom or a lower alkyl group, or they may combine together to form a lower alkylene group; B is a group of the formula:
(wherein R³ and R⁴ independently are a hydrogen atom, an optionally substituted aliphatic or aromatic hydrocarbon residue or an optionally substituted heterocyclic group, or they may form an optionally substituted heterocyclic group together with the nitrogen atom to which they are bonded; and n denotes an integer of 0 to 2), or a group of the formula:
(wherein R⁵ and R⁶ independently are a hydrogen atom, an optionally substituted aliphatic or aromatic hydrocarbon residue group or an optionally substituted heterocyclic group, or they may form an optionally substituted heterocyclic group together with the nitrogen atom and sulfur atom to which they are bonded; and m denotes an integer of 0 to 2); and R⁷ is a hydrogen atom or an acylated hydroxyl group, or may form a bond together with R¹, or a salt thereof, which is useful as an antifungal agent.
Optically Active Antifungal Azoles. III. Synthesis and Antifungal Activity of Sulfide and Sulfonamide Derivatives of (2R,3R)-2-(2,4-Difluorophenyl)-3-mercapto-1- (lH-1,2,4-triazol-1-yl)-2-butanol.
In an effort to find potent antifungal agents, optically active sulfur-containing triazole derivatives, sulfides (3) and sulfonamides (4), were prepared and evaluated for antifungal activity against Candida albicans in vitro and in vivo. The sulfides (3) were prepared by the reaction of (2R, 3R)-2-(2, 4-difluorophenyl)-3-mercapto-1-(1H, 1, 2, 4-triazol-1-yl)-2-butanol (1) with various heteroarylmethyl chlorides in the presence of sodium methoxide. The sulfonamides (4) were synthesized starting from the disulfide (15) in three steps including oxidation of the corresponding sulfenamides (17). Some of the sulfur-containing triazole derivatives (3, 4) showed strong protective effects against candidosis in mice.
An azole compound represented by the formula (I): ##STR1## wherein X is a nitrogen atom; Ar is a phenyl group substituted by halogen or a halogenated C.sub.1-4 alkyl group; R.sup.1 and R.sup.2 independently are a hydrogen atom or a lower alkyl group, or R.sup.1 and R.sup.2 may combine together to form a lower alkylene group; n denotes an integer of 0 to 2; and R.sup.7 is a hydrogen atom, a hydroxyl group which may be optionally acylated by an acyl group selected from acetyl, propionyl, butyryl, isobutyryl, phenylacetyl and benzoyl, or may form a bond together with R.sup.1 ; or a salt thereof.