In the presence of catalytic amounts of Cp*RuCl(cod), the cycloaddition of 1,6-diynes with various C-alkynylglycosides proceeded at ambient temperature to afford C-arylglycosides in 46-93% yields.

In the presence of catalytic amounts of Cp*RuCl(cod), the partially intramolecular cyclotrimerizations of various C-alkynylglycosides and C-diynylglycosides proceeded at ambient temperature to afford C-arylglycosides.

Carbohydrates U 0500Selective Synthesis of C-Arylglycosides via Cp*RuCl-Catalyzed Partially Intramolecular Cyclotrimerizations of C-Alkynylglycosides. -The method represents an efficient approach to diverse C-arylglycosides which are of biological interest. -(YAMAMOTO*, Y.; SAIGOKU, T.; NISHIYAMA, H.; OHGAI, T.; ITOH, K.; Org.

Synthesis of C-Arylglycosides via Ru(II)-Catalyzed [2 + 2 + 2] Cycloaddition. -In the presence of a Ru-catalyst, the cycloaddition of 1,6-diynes with various C-alkynylglycosides proceeds at ambient temperature to afford the title compounds, such as (III), (V), (VII), (IX) and (XI). -(YAMAMOTO*, Y.; SAIGOKU, T.; OHGAI, T.; NISHIYAMA, H.; ITOH, K.; Chem.