Monsanto Company

Bryan G Winchester

George W Fleet

Neil M Carpenter

Novel heptitol analogues of mannofuranose and their syntheses from .delta.-lactones of heptonic acids are disclosed. The novel heptitols are (A) 2,5-dideoxy-2,5-imino-D-glycero-D-talo-heptitol and (b) 1-amino-2,5-anydro-1-deoxy-D-glycero-D-talo-heptitol. These novel heptitol compounds are useful inhibitors of glycosidases.

Heptitols

Novel heptitol analogues of mannofuranose and their syntheses from .delta.-lactones of heptonic acids are disclosed. The novel heptitols are (A) 2,5-dideoxy-2,5-imino-D-glycero-D-talo-heptitol and (b) 1-amino-2,5-anhydro-1-deoxy-D-glycero-D-talo-heptitol. These novel heptitol compounds are useful inhibitors of glycosidases.

Pyrrolidin-3,4-diol derivatives of heptitols and preparation thereof

The novel D-rhamnono-? ,5-lactone and a novel method of synthesis of said compound from the monoacetonide of L-gulono-.gamma.-lactone is disclosed. D-Rhamnono-1,5-lactone is a potent inhibitor of .alpha.-and .beta.-mannosidases but not of .alpha.-rhamnosidase.

D-rhamnono-1,5-lactone

Novel derivatives of 1,4-dideoxy-1,4-imino-D-mannitol and method for their synthesis from 4,5-anhydro-1-azido-1-deoxy-2,3-O-isopropylidene-D-talitol or its triflate derivative are disclosed. The novel derivatives, 6-fluoro-1,4-imino-1,4,6-trideoxy-D-mannitol and the N-butyl and N-benzyl derivatives of 1,4-dideoxy-1,4-imino-D-mannitol, have useful mannosidase inhibitory activity.

Derivatives of 1,4-dideoxy-1,4-imino-D-mannitol and preparation thereof

Novel derivatives of 1,4-dideoxy-1,4-imino-D-mannitol and method for their synthesis from 4,5-anhydro-1-azido-1-deoxy-2,3-O-isopropylidene-D-talitol or its triflate derivative are disclosed. The novel derivatives, 6-fluoro-1,4-imino-1,4,6-trideoxy-D-mannitol and the N-butyl and N-benzyl derivatives of 1,4-dideoxy-1,4-amino-D-mannitol, have useful mannosidase inhibitory activity.

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London, United Kingdom

Bryan G Winchester