Synthesis of sialosides

Details Synthesis of sialosides Synthesis of sialosides

1990-08-13

1992-08-11

Brown, Johnnie R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 175, 536 54, 536 552, 536 553, 536 41, 536 171, C07G 300, C07H 504, C07H 510

Patent

active

051380447

ABSTRACT:
Reaction schemes for carrying out a variety of chemical synthesis are disclosed. The reactions produce .alpha.-(X)-sialosides wherein X is O, S, N or another compatible electron donating atom or molecular moiety. The reaction schemes include a relatively small number of steps to provide a yield with a relatively small amount of undesired .beta.-configuration product. Compounds synthesized are encompassed by the following general structural formula I. ##STR1## wherein R, R' and R" are each independently H, CH.sub.3, acetyl, or a disaccharide which is preferably lactose.

REFERENCES:
patent: 4691012 (1987-09-01), Ogura et al.
patent: 4694076 (1987-09-01), Ogawa et al.
patent: 4914035 (1990-04-01), Hasegawa et al.
patent: 4935506 (1990-06-01), Goto et al.

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