192444-67-0

Upstream product

• 183388-21-8 allyl 4,6-O-benzylidene-2-deoxy-2-(2,2,2-trichloroethoxycarbonylamino)-α-D-glucopyranoside 
• 172371-05-0 allyl 4,6-O-benzylidene-3-O-[(S)-3-(benzyloxy)tetradecanoyl]-2-deoxy-2-(2,2,2-trichloroethoxycarbonylamino)-α-D-glucopyranoside 

Downstream Products

• 192444-70-5 6-O-benzyl-3-O-[(S)-3-(benzyloxy)tetradecanoyl]-2-deoxy-4-O-(1,5-dihydro-3-oxo-3λ⁵-3H-2,4,3-benzodioxaphosphepin-3-yl)-2-(2,2,2-trichloroethoxycarbonylamino)-D-glucopyranosyl trichloroacetimidate 
• 192444-68-1 allyl 6-O-benzyl-3-O-[(S)-3-(benzyloxy)tetradecanoyl]-2-deoxy-4-O-(1,5-dihydro-3-oxo-3λ⁵-3H-2,4,3-benzodioxaphosphepin-3-yl)-2-(2,2,2-trichloroethoxycarbonylamino)-α-D-glucopyranoside 

Relevant academic research and scientific papers

Enzymatic preparation of (S)-3-hydroxytetradecanoic acid and synthesis of unnatural analogues of lipid A containing the (S)-acid

Synthesis of unnatural analogues, that contain (S)-3-hydroxytetradecanoyl moieties in place of the corresponding natural (R)-isomers, of both lipid A and its biosynthetic precursor, designated precursor Ia or lipid IV(A), has been achieved through our recently developed procedure. (S)-3-Hydroxytetradecanoic acid was prepared from its racemate through the optical resolution by the use of a lipase and subsequent fractional recrystallization. The (S)-acyl analogue of lipid A exhibited slightly stronger interleukin-6 inducing activity than the corresponding natural lipid A, and the (S)-acyl analogue of the biosynthetic precursor was far more active than the natural precursor in inhibiting the induction of interleukin-6 by lipopolysaccharide.