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One-pot synthesis of glycyrrhetic acid polyglycosides based on grafting-from method using cyclic sulfite.

ABSTRACT: Glycyrrhetic acid polyglycosides were synthesized in one-pot via cationic ring-opening condensation polymerization of cyclic sulfite (4) initiated by glycyrrhetic acid as an aglycon. Sulfite 4 worked as a practical monomer for the preparation of (1 ? 2)-linked polysaccharide skeletons. The chemical stability of 4 was evaluated by the comparison of thermodynamic parameters with those of conventional epoxide (2). The grafting reaction of 4 from glycyrrhetic acid (5) was performed in the presence of TfOH and MS 3A in CH2Cl2 at room temperature. The polymerization degree was moderately controllable by the change of feed ratio of initiator.

SUBMITTER: Shetty SS

PROVIDER: S-EPMC7111874 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

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One-pot synthesis of glycyrrhetic acid polyglycosides based on grafting-from method using cyclic sulfite.

Shetty Sangeetha S SS Koyama Yasuhito Y

Tetrahedron letters 20160702 32

Glycyrrhetic acid polyglycosides were synthesized in one-pot via cationic ring-opening condensation polymerization of cyclic sulfite (4) initiated by glycyrrhetic acid as an aglycon. Sulfite 4 worked as a practical monomer for the preparation of (1 → 2)-linked polysaccharide skeletons. The chemical stability of 4 was evaluated by the comparison of thermodynamic parameters with those of conventional epoxide (2). The grafting reaction of 4 from glycyrrhetic acid ...[more]

PMID: 32287447

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