Abstract: We claim a simple strategy for the synthesis of a collection of C(3?)-spirodihydroisobenzo-furannulated and C(3?)-spirodihydroisobenzo-furannulated nucleosides featuring a [2+2+2]-cyclotrimerization as the key reaction. The cyclotrimerization reactions are facile with the unprotected nucleosides having a diyne unit. When both alkynes of the diyne are terminal, the regioselectivity is poor. However, when one of the terminal alkynes is additionally substituted, the cyclotrimerizations are highly diastereoselective. Since the key bicycloannulation is the final step, this strategy provides flexibility in terms of the alkynes and is thus amenable for the synthesis of a focussed small molecule library.

Abstract: The present application relates to 1,4-disubstituted 1,2,3-Triazole antifungal agents of the formula (I) wherein, R1 is halogens such as fluorine, chlorine or bromine, CF3, alkyl; R2 is alkyl or hydrogen; R3 is halogen selected from fluorine, chlorine or bromine; and n is 0 or 1. The application further relates to the synthesis of said compounds, to fungicidal compositions containing said compounds and to their use in a method for treating fungal infections.

Abstract: The present invention disclose an improved one pot process for synthesis of acyl thioureas of formula (I), with yield greater than 80%, from aroyl chlorides of formula (I) wherein, R? is an aryl or a heteroarylene group substituted with one or more groups selected from hydrogen, alkyl, alkylene, alkynyl, alkoxy, alkenyloxy, halo, hydroxyl, nitro, amino, carboxyl, ester, halogenated hydrocarbon or an aryl or heteroaryl; R? and R?? are selected independently from hydrogen, alkyl, alkylene, alkynyl, alkoxy, alkenyloxy, halo, hydroxyl, nitro, amino or halogenated hydrocarbon.

Abstract: We claim a simple strategy for the synthesis of a collection of C(3?)-spirodihydroisobenzo-furannulated and C(3?)-spirodihydroisobenzo-furannulated nucleosides featuring a [2+2+2]-cyclotrimerization as the key reaction. The cyclotrimerization reactions are facile with the unprotected nucleosides having a diyne unit. When both alkynes of the diyne are terminal, the regioselectivity is poor. However, when one of the terminal alkynes is additionally substituted, the cyclotrimerizations are highly diastereoselective. Since the key bicycloannulation is the final step, this strategy provides flexibility in terms of the alkynes and is thus amenable for the synthesis of a focussed small molecule library.

Abstract: We claim a simple strategy for the synthesis of a collection of C(3?)-spirodihydroisobenzo-furannulated and C(3?)-spirodihydroisobenzo-furannulated nucleosides featuring a [2+2+2]-cyclotrimerization as the key reaction. The cyclotrimerization reactions are facile with the unprotected nucleosides having a diyne unit. When both alkynes of the diyne are terminal, the regioselectivity is poor. However, when one of the terminal alkynes is additionally substituted, the cyclotrimerizations are highly diastereoselective. Since the key bicycloannulation is the final step, this strategy provides flexibility in terms of the alkynes and is thus amenable for the synthesis of a focussed small molecule library.

Abstract: The patent discloses novel 2,2-disubstituted 1,2-dihydro-3H-indol-3-one derivatives and their preparation thereof.

Abstract: The patent discloses novel 2,2-disubstituted 1,2-dihydro-3H-indol-3-one derivatives and their preparation thereof.

Abstract: We claim a simple strategy for the synthesis of a collection of C(3?)-spirodihydroisobenzo- furannulated and C(3?)-spirodihydroisobenzo-furannulated nucleosides featuring a [2+2+2]-cyclotrimerization as the key reaction. The cyclotrimerization reactions are facile with the unprotected nucleosides having a diyne unit. When both alkynes of the diyne are terminal, the regioselectivity is poor. However, when one of the terminal alkynes is additionally substituted, the cyclotrimerizations are highly diaste reoselective. Since the key bicycloannulation is the final step, this strategy provides flexibility in terms of the alkynes and is thus amenable for the synthesis of a focussed small molecule library.