A concise total synthesis of (+)-deoxocassine and (−)-deoxoprosophylline from d-xylose
摘要:
A concise total synthesis of (+)-deoxocassine (1) and (-)-deoxoprosophylline (2) has been achieved for the first time from D-xylose. The key steps involved in these synthesis are alkyl Grignard reaction, S(N)2 substitution of mesylate by azide, Wittig reaction, and reductive amination. (C) 2012 Elsevier Ltd. All rights reserved.
The present invention relates to a polysaccharide derivative which is able to not only enhance cleaning properties of clothing, etc. but also suppress resoiling due to powder soil during washing.
The polysaccharide derivative is a polysaccharide derivative having a cationic group and a hydrocarbon group (R) having 2 or more carbon atoms, wherein the hydrocarbon group (R) is bound to a group resulting from eliminating a hydrogen atom from a hydroxy group of a hydroxyalkylated polysaccharide, directly or via a hydrocarbon group having an oxygen atom; the hydroxyalkylated polysaccharide is a hydroxyethylated polysaccharide or a hydroxypropylated polysaccharide; and the hydroxyalkylated polysaccharide has a weight average molecular weight of 10,000 or more and 740,000 or less.
A concise total synthesis of (+)-deoxocassine (1) and (-)-deoxoprosophylline (2) has been achieved for the first time from D-xylose. The key steps involved in these synthesis are alkyl Grignard reaction, S(N)2 substitution of mesylate by azide, Wittig reaction, and reductive amination. (C) 2012 Elsevier Ltd. All rights reserved.
Aghapour, Ghasem; Afzali, Asieh; Salek, Fahimeh, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2009, vol. 48, # 2, p. 231 - 236