Sugar acetals, their preparation and use

Details Sugar acetals, their preparation and use Sugar acetals, their preparation and use

1980-03-26

1981-08-18

Brown, Johnnie R.

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

Organic compounds

Carbohydrates or derivatives

536120, 536122, C07H 502, C07H 902

Patent

active

042847630

ABSTRACT:
Novel sugar acetals such as those of formula ##STR1## where R.sup.a is hydrocarbyl; R.sup.b and R.sup.c are hydrogen or hydrocarbyl; R.sup.3' R.sup.4' and R.sup.6' are hydrogen or R.sup.4' with R.sup.3' or R.sup.6' is ##STR2## are made from 1,4-linked reducing disaccharides by a new exchange acetalation process in which the solvent is omitted. The sugar acetals have free hydroxy groups on the ring which groups can be converted to other substituents, e.g. chlorodeoxy or fatty acid acyl. After deprotection, the corresponding derivative of the initial disaccharide is obtained.

REFERENCES:
patent: 3598804 (1971-08-01), Hindley et al.
patent: 3723412 (1973-03-01), Hicks et al.
patent: 3751409 (1973-08-01), Lee

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