Synthesis and antifungal activity of new azole derivatives containing an N-acylmorpholine ring.
J Med Chem
; 38(20): 3918-32, 1995 Sep 29.
Article
en En
| MEDLINE
| ID: mdl-7562925
A series of azole derivatives carrying an N-acylmorpholine ring are described. The compounds were chemically designed to simulate the lanosterol D ring, taking advantage of the conformational preferences of 2-alkyl-1-acylmorpholines. Three structural variables, the nature of the N-benzoyl group, the phenyl substituents, and the degree of oxidation at carbon 2 of the morpholine, were optimized for maximum activity. Only the (5R,6R) isomers showed antifungal activity. Cyclic hemiacetal (-)-39a (UR-9746) and cyclic ether (-)-41 (UR-9751) were selected for further development. In vitro, (-)-41 was clearly more active than (-)-39a and somewhat less active than the acyclic counterpart (-)-7. In vivo activity was assessed by a systemic (mouse) and a vaginal (rat) candidosis model. In the former, (-)-39a, (-)-41, and (-)-7 at 1 mg/kg given 1, 4, and 24 h postinfection displayed 90-100% protection from mortality on day 9. Compound (-)-39a was slightly more potent than (-)-41 and similar in potency to (-)-7. The three compounds were superior in potency to fluconazole and similar in potency in SCH-42427 in this test. In the vaginal model, (-)-39a and (-)-41 given daily during 3 days after infection at 0.5 mg/kg showed high levels of protection on days 10 and 15. At 0.25 mg/kg, (-)-39a was slightly more potent than SCH-42427 and (-)-7 and superior in potency to (-)-41 and fluconazole in this model. Preliminary 28-day toxicity tests at 100 mg/kg/day po in rats indicated no or very mild adverse effects for the two UR compounds.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Azoles
/
Antifúngicos
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
J Med Chem
Asunto de la revista:
QUIMICA
Año:
1995
Tipo del documento:
Article
País de afiliación:
España
Pais de publicación:
Estados Unidos