149342-37-0

Upstream product

• 3306-05-6 N-(2-hydroxy-2-phenylethyl)acetamide 
• 108-24-7 acetic anhydride 
• 7568-93-6 2-Amino-1-phenylethanol 
• 100-42-5 styrene 
• 79-15-2 N-bromoacetamide 
• 119718-87-5 cyano(phenyl)methyl acetate 
• 5468-37-1 2-aminoacetophenone hydrochloride 
• 108-05-4 vinyl acetate 
• 108-22-5 Isopropenyl acetate 
• 55044-72-9 2-acetamido-1-phenylethyl acetate 
• 1846-33-9 N-phenacylacetamide 

Downstream Products

• 2549-14-6 (R)-2-Amino-1-phenylethanol 

Relevant academic research and scientific papers

Bioactive alkaloids from the actinomycete Actinoalloteichus sp. ZZ1866

The new alkaloids marinacarbolines E?Q (1?10, 12?14), caerulomycin N (15), and actinoallonaphthyridine A (16), together with the known marinacarboline C (11) and cyanogramide (17), were isolated from the actinomycete Actinoalloteichus sp. ZZ1866. The structures of the isolated compounds were elucidated based on their HRESIMS data, extensive NMR spectroscopic analyses, Mosher’s method, ECD calculations, single-crystal X-ray diffraction analysis, and chemical degradation studies. Marinacarbolines E?L (1? 8) share an indole-pyridone-imidazole tetracyclic skeleton, which is the first example of this kind of skeleton. Caerulomycin N (15) and cyanogramide (17) exhibited cytotoxic activity against both human glioma U251 and U87MG cells with IC50 values of 2.0?7.2 μM. Marinacarbolines E (1), G (3), I (5), and M (9) showed cytotoxic activity against U87MG cells with IC50 values of 2.3?8.9 μM.

Method for synthesizing chiral alpha-amino alcohol compound

The invention discloses a method for synthesizing a chiral alpha-amino alcohol compound. The method comprises the following steps: sequentially adding an iron catalyst, a ligand, ketone, an organic solvent and silane into a reaction system at 20-30 DEG C in a nitrogen atmosphere, then stirring the obtained mixture, and carrying out column chromatography separation on the obtained product to obtain a product, namely chiral alpha-amino alcohol. According to the invention, the most high-yield iron catalyst in earth crust is used, and cheap silane (PMHS, 500 g/298 yuan) is adopted as a reducing agent, so the asymmetric reduction reaction of alpha-amino ketone can be efficiently achieved under mild conditions so as to obtain the high-yield optically-active chiral alpha-amino alcohol compound; and moreover, through the creative labor of the inventor, reaction yield can reach 99%, and meanwhile, the content of the target product in the generated reaction product is 99%.

PROCESS FOR PREPARING INTERMEDIATES FOR THE SYNTHESIS OF OPTICALLY ACTIVE BETA-AMINO ALCOHOLS BY ENZYMATIC REDUCTION AND NOVEL SYNTHESIS INTERMEDIATES

Subject-matter of the present invention is a process for preparing intermediates for the synthesis of optically active beta-amino alcohols by enzymatic reduction of the corresponding beta-amino ketones. Subject-matter of the invention are also said novel

Easy kinetic resolution of some β-amino alcohols by Candida antarctica lipase B catalyzed hydrolysis in organic media

Herein, we present an easy and eco-friendly pathway to obtain some enantiomerically enriched β-amino alcohols using essentially as β-blockers. The enzymatic hydrolysis is conducted in hydrophobic organic media, assisted by sodium carbonate and CAL-B. We describe a new and effective procedure in terms of the chemo- and enantioselectivity, which allows for the formation of both enantiomers: the 2-acetamido-1-arylacetates and 2-acetamido-1-arylethanols were obtained with high ee values (up to >99%), while the selectivities reached E >200. The obtained results show a high CAL-B affinity toward the deacylation of the 2-acetamido-1-arylacetates compared to the acylation one. The structure of the 2-acetamido-1-arylacetates had a significant influence on both reactivity and selectivity of the CAL-B catalyzed deacylation. A multigram scale O-deacylation of racemic 2-acetamido-1-phenylacetate has been carried out, giving access both enantiomers with high enantiomeric purity and good isolated chemical yields.

Backbone modification of β-hairpin-forming tetrapeptides in asymmetric acyl transfer reactions

Synthetic oligopeptides as mimics of enzymes have been increasingly exploited as catalysts for asymmetric reactions, but highly effective oligopeptide catalysts with relatively low molecular weight are still in great demand. In this paper, we showed the conformational engineering of the β-hairpin-forming tetrapeptide 4 which was first reported by Miller's group as the catalyst for the asymmetric acyl transfer reaction of trans-2-(N-acetylamino)cyclohexan-1-ol (krel = 28). Through our backbone modification strategy, thioamide and sulfonamide as the isosteres of amide were introduced in the β-hairpin secondary structure. The thioxo peptides also adopt β-hairpin conformations as the oxopeptide supported by the combined use of NMR, IR, and X-ray techniques. Thioxo tetrapeptide 14 formed a more constrained β-hairpin conformation and therefore delivered much higher enantioselectivity (krel = 109) in the same reaction. Moreover, the examination of the conformational changes of tetrapeptide 8 upon the protonation of the Nπ-methylhistidine moiety provided evidence to explain the variation of its catalytic efficiency in the asymmetric acyl-transfer reaction.

Catalytic hydrogenation of cyanohydrin esters as a novel approach to N-acylated β-amino alcohols - Reaction optimisation by a design of experiment approach

The catalytic hydrogenation of acylated cyanohydrins and subsequent intramolecular migration of the acyl group to yield pharmaceutically interesting N-acyl β-amino alcohols is shown to be a successful one-pot preparation method. The combination of a multi

Osmylated macroporous resins: Safe, highly efficient and recyclable catalysts for asymmetric aminohydroxylation of olefins

Osmylated macroporous resins displayed excellent catalytic performances in the asymmetric aminohydroxylation of olefins and, moreover, these resins were easily recovered and reused without any significant decrease in catalytic efficiencies.

Horse liver esterase catalyzed enantioselective hydrolysis of N,O- diacetyl-2-amino-1-arylethanol

N,O-Diacetyl-2-amino-1-arylethanol can be efficiently resolved by horse liver esterase (HLE). A remarkable organic co-solvent effect on the enantioselectivity of HLE was observed.

Enantiomers of Ring-Substituted 2-Amino-1-phenylethanols by Pseudomonas cepacia Lipase

The enantiomers of 2-amino-1-phenylethanols were obtained enantiomerically pure (ee > 95percent) at 50percent conversion by the Pseudomonas cepacia lipase-catalysed O-acylation of amino alcohols or O-deacylation of the corresponding N,O-diacylated compoun