A new protocol for the acetoxylation and hydroxylation of oxobenzoxazine derivatives via an ortho-C–H functionalization strategy using a palladium catalyst has been developed with chemo- and site-selectivity.

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The isolation and characterization of three major saponins from Asterias vulgaris is described. All three possess identical thornasterol A aglycones and have C-3 sulfate and C-6 oligosaccharide features. In two cases, the oligosaccharide side-chain features only quinovose and fucose (3:2 and 3:1) and the third has quinovose and an unidentified sugar (3:1).

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A general protocol for the synthesis of angularly substituted tricyclic chromenopyrazoles via an intramolecular azomethine imine 1,3‐dipolar cycloaddition (IAIDC) reaction of O‐allylated salicylaldehydes (derived from bromo derivatives of Baylis‐Hillman adducts) and aryl hydrazines has been described for the first time. This reaction creates two rings (six and five‐membered) via the formation of one C–C bond and two C−N bonds. Moreover, the products are formed with two chiral centers with high diastereoselectivity and stereospecificity. Some of the synthesized compounds were examined for the fluorescent properties and found to exhibit strong fluorescence in the blue region.