303752-86-5

Upstream product

• 117168-59-9 (2S,3S,4R)-2-azido-1,3,4-octadecanetriol 
• 303752-87-6 O-(2,3-di-O-benzyl-4,6-O-benzylidene-α-D-galactopyranosyl) trichloroacetimidate 
• 1177264-18-4 C₃₄H₃₄O₅S 
• 100759-11-3 allyl 2,3-di-O-benzyl-4,6-di-O-benzylidene-α-D-galactopyranoside 
• 160280-65-9 (2R,3R,4R)-1,3,4-trihydroxyoctadecan-2-yl methanesulfonate 
• 117168-66-8 (2S,4R,5R)-4-[(R)-1-hydroxypentadecyl]-2-phenyl-1,3-dioxan-5-yl methanesulfonate 
• 303752-88-7 Allyl 2,3-Bis-O-(phenylmethyl)-4,6-O-(phenylmethylene)-D-galactopyranoside 
• 20746-64-9 (2S,4aR,7R,8R,8aR)-6-Allyloxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxine-7,8-diol 
• 3006-41-5 4,6-O-benzylidene-α,β-D-galactopyranose 
• 100-39-0 benzyl bromide 
• 303752-91-2 1-O-(2,3-di-O-benzyl-4,6-O-benzylidene-α-D-galactopyranosyl)-2-O-methanesulfonyl-D-arabino-1,2,3,4-octadecantetrol 

Downstream Products

• 951767-71-8 2-azido-3,4-di-O-benzyl-1-O-(2,3-di-O-benzyloxyl-4,6-O-benzyllidene-α-D-galactopyranosyl)-D-ribooctadecane-1,3,4-triol 

Relevant academic research and scientific papers

Potent Neutralizing Antibodies Elicited by RBD-Fc-Based COVID-19 Vaccine Candidate Adjuvanted by the Th2-Skewing iNKT Cell Agonist

The development of a safe and effective COVID-19 vaccine is of paramount importance to terminate the current pandemic. An adjuvant is crucial for improving the efficacy of the subunit COVID19 vaccine. α-Galactosylceramide (αGC) is a classical iNKT cell agonist which causes the rapid production of Th1- and Th2-associated cytokines; we, therefore, expect that the Th1- or Th2-skewing analogues of αGC can better enhance the immunogenicity of the receptor-binding domain in the spike protein of SARS-CoV-2 fused with the Fc region of human IgG (RBD-Fc). Herein, we developed a universal synthetic route to the Th1-biasing (α-C-GC) and Th2-biasing (OCH and C20:2) analogues. Immunization of mice demonstrated that αGC-adjuvanted RBD-Fc elicited a more potent humoral response than that observed with Alum and enabled the sparing of antigens. Remarkably, at a low dose of the RBD-Fc protein (2 μg), the Th2-biasing agonist C20:2 induced a significantly higher titer of the neutralizing antibody than that of Alum.

Total synthesis of α-galactosyl cerebroside

A highly convergent synthetic approach was developed to obtain α- galactosyl cerebroside O-(α-D-galactopyranosyl)-2-hexacosylamino-D-ribo- 1,3,4-octadecantriol, which has previously been demonstrated to have immunostimulatory activity. Known 4,6-O-benzyli