114200-61-2Relevant articles and documents
Glycosyl Imidates, 35. - Synthesis of a Cerebroside Having a (4E,8E)-Sphingadienine Moiety from Tetragonia tetragonoides with Antiulcerogenic Activity
Baer, Thomas,Schmidt, Richard R.
, p. 669 - 674 (2007/10/02)
The natural cerebroside 1a possessing antiulcerogenig activity and its diastereomer 1b were readily synthesized by the azidosphingosine glycosylation method.The requied (4E,8E)-azidosphingadienine 12 was obtained from (4E)-tetradecenyl bromide (7) and 2,4-O-benzylidene-D-threose (9) by Wittig reaction, subsequent azide introduction and benzylidene group removal.For the glucosylation the corresponding 3-O-benzoyl derivative 15 was prepared; it provided with the trichloroacetimidate 16 as glucosyl donor the desired β-D-glucopyranosyl derivative 17 in high yield.Deprotection and azido group reduction afforded compound 19 with a free amino group.N-Acylation with both enantiomers of 2-hydroxypalmitic acid (using the derivatives 20 a,b) yielded after deacetylation compounds 1a and 1b, respectively.