131403-16-2

Upstream product

• 80696-29-3 (S)-(+)-2-Amino-1-hexanol 
• 501-53-1 benzyl chloroformate 
• 13139-17-8 N-(Benzyloxycarbonyloxy)succinimide 
• 327-57-1 L-Norleucine 
• 100-51-6 benzyl alcohol 

Downstream Products

• 109364-33-2 N-(benzyloxycarbonyl)-L-norleucinal 
• 1178909-91-5 tert-butyl [((2S)-2-{[(benzyloxy)carbonyl]amino}hexyl)oxy]acetate 
• 131403-19-5 (S)-N-benzyloxycarbonyl-1-butyl-4-pentenylamine 
• 131403-18-4 (S)-2-benzyloxycarbonylamino-1-iodohexane 
• 131403-17-3 (S)-2-benzyloxycarbonylamino-1-hexyl p-toluenesulfonate 

Relevant academic research and scientific papers

COMBINATION OF HEPATITIS B VIRUS (HBV) VACCINES AND PYRIDOPYRIMIDINE DERIVATIVES

Therapeutic combinations of hepatitis B virus (HBV) vaccines and a pyridopyrimidine derivative are described. Methods of inducing an immune response against HBV or treating an HBV-induced disease, particularly in individuals having chronic HBV infection, using the disclosed therapeutic combinations are also described. The invention provides therapeutic combinations or compositions and methods for inducing an immune response against hepatitis B viruses (HBV) infection.

TOLL LIKE RECEPTOR MODULATOR COMPOUNDS

The present disclosure relates generally to toll like receptor modulator compounds, such as diamino pyrido[3,2 D]pyrimidine compounds and pharmaceutical compositions which, among other things, modulate toll-like receptors (e.g. TLR-8), and methods of making and using them.

Dihydroxyacetone phosphate aldolase catalyzed synthesis of structurally diverse polyhydroxylated pyrrolidine derivatives and evaluation of their glycosidase inhibitory properties

The chemoenzymatic synthesis of a collection of pyrrolidine-type iminosugars generated by the aldol addition of dihydroxyacetone phosphate (DHAP) to C-α-substituted N-Cbz-2-aminoaldehydes derivatives, catalyzed by DHAP aldolases is reported. L-Fuculose-1-phosphate aldolase (FucA) and L-rhamnulose-1-phosphate aldolase (RhuA) from E. coli were used as biocatalysts to generate configurational diversity on the iminosugars. Alkyl linear substitutions at C-α were well tolerated by FucA catalyst (i.e., 40-70% conversions to aldol adduct), whereas no product was observed with C-α-alkyl branched substitutions, except for dimethyl and benzyl substitutions (20%). RhuA was the most versatile biocatalyst: C-α-alkyl linear groups gave the highest conversions to aldol adducts (60-99%), while the C-α-alkyl branched ones gave moderate to good conversions (50-80%), with the exception of dimethyl and benzyl substituents (20%). FucA was the most stereoselective biocatalyst (90-100% anti (3R,4R) adduct). RhuA was highly stereoselective with (S)-N-Cbz-2-aminoaldehydes (90-100% syn (i.e., 3R,4S) adduct), whereas those with R configuration gave mixtures of antilsyn adducts. For iPr and iBu substituents, RhuA furnished the anti adduct (i.e., FucA stereochemistry) with high stereoselectivity. Molecular models of aldol products with iPr and iBu sub-stituents and as complexes with the RhuA active site suggest that the and adducts could be kinetically preferred, while the syn adducts would be the equilibrium products. The polyhydroxylated pyrrolidines generated were tested as inhibitors against seven glycosidases. Among them, good inhibitors of a-L-fucosidase (IC50 = 1-20 μM), moderate of α-L-rhamnosidase (IC50=7-150 μM), and weak of α-D-mannosidase (IC50 = 80-400 μM) were identified. The apparent inhibition constant values (Ki) were calculated for the most relevant inhibitors and computational docking studies were performed to understand both their binding capacity and the mode of interaction with the glycosidases.

Exploration of the P2-P3 SAR of aldehyde cathepsin K inhibitors

The synthesis and biological activity of a series of aldehyde inhibitors of cathepsin K are reported. Exploration of the properties of the S2 and S3 subsites with a series of carbamate derivatized norleucine aldehydes substituted at the P2 and P3 positions afforded analogs with cathepsin K IC50s between 600nM and 130pM.

An Efficient Route to Chiral trans-2,5-Dialkylpyrrolidines via Stereoselective Intramolecular Amidomercuration

An intramolecular amidomercuration of α-butylated 4-pentenylcarbamate 5 predominantly provided trans-2,5-disubstituted pyrrolidine 6, which was elaborated to chiral trans-5-butyl-2-alkylpyrrolidines 10 and 13, constituents of ant venoms.