Synthesis of N-Acetylglucosaminyl- and N-Acetylgalactosaminylceramides as Cerebroside Analogs and Their Anti-human Immunodeficiency Virus Type 1 Activities.
Monoglycosylceramide derivatives containing mimicks of ceramide were synthesized as cerebroside analogs from D-glucosamine or D-galactosamine derivatives and N-benzyloxycarbonyl-L-serine myristylamide by using trimethylsilyl trifluoromethanesulfonate (TMSOTf) as a promoter. The synthesized sulfated glycolipids show moderate anti-HIV-1 activities.
We have established an efficient synthesis of mimics of beta-galactosylceramide (beta-GalCer) increasing a beta-glucocerebrosidase (beta-GlcCer'ase) activity that associates with the skin barrier function. Among the synthetic beta-GalCer analogues (6a-6e) described herein, compound 6e exhibited a potent effect on the activation of beta-GlcCer'ase function in vitro and reduced the transepidermal water loss (TEWL) level in a UVB-induced barrier disrupted mice model. These findings indicated that compound 6e could be useful for cosmetics and medicines to improve skin barrier function. (C) 2003 Elsevier Science Ltd. All rights reserved.
Synthesis of Sulfated Cerebroside Analogs Having Mimicks of Ceramide and Their Anti-human Immunodeficiency Virus Type 1 Activities.
Various sulfated cerebroside analogs, which are mimicks of cerebroside, have been prepared from per-O-acetylated D-glucose, per-O-acetylated D-galactose, and per-O-acetylated D-lactose with ethyleneglycol dodecyl ether, 3-docosyloxy-1-propanol, 2-hydroxymethyl-1, 3-O-dimyristyl-1, 3-propanediol, and L-serine diamide derivatives as ceramide moieties. The synthesized sulfated glycolipids showed anti-HIV-1 activities.