Carbohydrates synthesis from leaves

Cyclic sulfites and sulfates in organic synthesis have been reviewed in a Tetrahedron report. The reactions of several carbohydrate-based sulfite and sulfate derivatives with nitrogen, carbon and sulfur nucleophiles are reported. In the area of natural products, five sulfated saikosaponins containing the trisaccharide unit 28 have been isolated as minor constituents from Bupleurum rigidum. The leaf-movement hormones, sulfated phenolic glycosides 29, have been shown to be plant specific, rather than being common to all plants. ... 

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