83167-57-1Relevant academic research and scientific papers
Stereoselective Synthesis of 1-O-Alkyl-3-O-benzyl-sn-glycerols and 1-O-Alkyl-2-O-methyl-3-O-β-D-glycosyl-sn-glycerols
Bauer, Friederike,Ruess, Klaus-Peter,Lieflaender, Manfred
, p. 765 - 768 (2007/10/02)
Starting with D-mannitol, the yield of th synthesis of 3-O-benzyl-sn-glycerol (1) could be improved.The regioselective alkylation of 1 at the primary hydroxy group to the 1-O-alkyl-3-O-benzyl-sn-glycerols 3 was achieved by using the dibutylstannylene protecting group.The 1-O-alkyl-2-O-methyl-sn-glycerols 4, readily obtainable from 3, were successfully glycosylated under the conditions of the Koenigs-Knorr reaction to give 1-O-alkyl-2-O-methyl-3-O-β-D-glycosyl-sn-glycerols. - Key Words: Lysoglycolipids, glyceryl ethers / Stereoselective synthesis / Koenigs-Knorr reaction / Glyceryl ethers
Synthesis of Glycerophosphonolipids Containing Aminoalkylphosphonic Acids
Yamauchi, Kiyoshi,Une, Fumiyoshi,Tabata, Sachio,Kinoshita, Masayoshi
, p. 765 - 770 (2007/10/02)
1,2-Di-O-octadecyl- and 1,2-di-O-hexadecanoyl-sn-glycerol 3-(2-aminoethyl)phosphonate (21) and (22) and the (3-aminopropyl)phosphonate analogues (23) and (24) were prepared with the aim of obtaining enzyme (lipase)-stable liposomes.New reactions were devised and classic methodologies were modified in order to transform D-mannitol (6) into optically pure 1,2-di-O-substituted sn-glycerols (12) and (13) (R=C18H37 and C15H31CO).Benzyloxycarbonylaminoalkylphosphonic acids (5a) and (5b) were then coupled with the glycerols by means of condensing reagents such as 2,4,6-triisopropylbenzenesulphonyl chloride.The resulting N-protected lipids were catalitically hydrogenated to furnish compounds (21)-(24) in overall yields of 10-20 percent from compound (6).
