Efficient Synthesis of α-C-Galactosyl Ceramide Immunostimulants: Use of Ethylene-Promoted Olefin Cross-Metathesis
摘要:
Olefin cross-metathesis has been used to prepare alpha-C-galactosylceramide derivatives. The metathesis process merged vinyl and propenyl glycosides with vinyl derivatives of phytosphingosine. The use of ethylene enhanced the yield of the methathesis step.
Efficient Synthesis of α-C-Galactosyl Ceramide Immunostimulants: Use of Ethylene-Promoted Olefin Cross-Metathesis
摘要:
Olefin cross-metathesis has been used to prepare alpha-C-galactosylceramide derivatives. The metathesis process merged vinyl and propenyl glycosides with vinyl derivatives of phytosphingosine. The use of ethylene enhanced the yield of the methathesis step.
Novel synthetic C-glycolipids, their synthesis and use to treat infections, cancer and autoimmune diseases
申请人:Tsuji Moriya
公开号:US20050222048A1
公开(公告)日:2005-10-06
The invention is directed to novel compounds of formulae (I), (II) and (III):
wherein X is O or NH;
R
3
is OH or a monosaccharide and R
4
is hydrogen, or R
3
is hydrogen and R
4
is OH or a monosaccharide;
R
5
is hydrogen or a monosaccharide; and pharmaceutically acceptable salts or esters thereof. The invention is also directed to the use of the compounds both directly and as immune adjuvants for treating cancer, infectious diseases and autoimmune diseases. The invention is also directed to syntheses of the intermediates which can be used to make these novel compounds.
Direct C-glycosylation of a conformationally constrained and stable C1-sp3 hybridized carbohydrate donor with a carefully designed sphingosine unit afforded the CH2-linked analogue of antitumor-active KRN7000 and its glucose congener.
Efficient Synthesis of α-C-Galactosyl Ceramide Immunostimulants: Use of Ethylene-Promoted Olefin Cross-Metathesis
作者:Guangwu Chen、John Schmieg、Moriya Tsuji、Richard W. Franck
DOI:10.1021/ol0482137
日期:2004.10.1
Olefin cross-metathesis has been used to prepare alpha-C-galactosylceramide derivatives. The metathesis process merged vinyl and propenyl glycosides with vinyl derivatives of phytosphingosine. The use of ethylene enhanced the yield of the methathesis step.