摘要:
Disclosed herein are a method of preparing a product including one or more product compounds selected from the group consisting of lactones having at least one group selected from the group consisting of carboxyl, carboalkoxy, hydroxy and carboxylate, a method of using compounds selected from the group consisting of aliphatic tricarboxylic acids, esters thereof, anhydrides thereof, and salts thereof as starting compounds for making the product compounds, and a method of using a heterogeneous hydrogenation catalyst in a method of preparing a product including one or more the product compounds.
摘要:
The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof: X-A-Y-L-R (I) which inhibit the protein(s) encoded by hepatitis B virus (HBV) or interfere with the function of the HBV life cycle of the hepatitis B virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HBV infection. The invention also relates to methods of treating an HBV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
摘要:
Disclosed are a novel diacylglycerol lactone compound for improving immunity and inhibiting infection by promoting neutrophil movement, a preparation method therefor, and an immunostimulator containing same as an active ingredient. The diacyloglycerol lactone compound is represented by chemical formula 1 of the specification. In chemical formula 1, R1 and R2 are respectively N and independently a C2-30 fatty acid group.
摘要:
The present invention relates to compounds which modulate (e.g., inhibit) the activity of beta-hydrolase (e.g., ASPH), including novel 2-aryl-5-amino-3(2H)-furanone and 2-heteroaryl-5-amino-3(2H)-furanone compounds, pharmaceutical compositions thereof, methods for their synthesis, and methods of using these compounds to modulate the activity of ASPH in an a cell-free sample, a cell-based assay, and in a subject. Other aspects of the invention relate to use of the compounds disclosed herein to ameliorate or treat cell proliferation disorders.
摘要:
Cranial placodes are embryonic structures essential for sensory and endocrine organ development. The efficient derivation of cranial placodes from human pluripotent stem cells is disclosed where the timed removal of the BMP inhibitor Noggin, a component of the dual-SMAD inhibition strategy of neural induction, triggers placode induction at the expense of CNS fates. Further fate specification at the pre-placode stage enables the selective generation of placode-derived trigeminal ganglia capable of in vivo engraftment, mature lens fibers and anterior pituitary hormone-producing cells that upon transplantation produce hormones including, but not limited to, human growth hormone and adrenocortiocotropic hormone in vivo. Alternatively, anterior pituitary hormone-producing cells are generated in cell culture systems in vitro.
摘要:
The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof: X-A-Y-L-R (I) which inhibit the protein(s) encoded by hepatitis B virus (HBV) or interfere with the function of the HBV life cycle of the hepatitis B virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HBV infection. The invention also relates to methods of treating an HBV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
摘要:
The present invention relates to a method for the stereoselective preparation of apiose derivatives from allylic alcohol compounds and allene compounds using catalytic asymmetric synthesis. The method for the stereoselective preparation of apiose derivatives of the present invention is based on the catalytic asymmetric synthesis from allylic alcohol compounds and allene compounds in the presence of a metal catalyst, so that apiose derivatives can be produced stereoselectively, with high yield, with high optical purity regardless of the types of substituents of the compounds. The method of the invention can also be used for the preparation of oligosaccharides including monosaccharides, disaccharides, and polysaccharides or various compounds including apiose derivatives because the method can minimize the production of by-products without using an activating group, unlike the conventional method for the preparation of adipose derivatives.
摘要:
The present invention provides compounds and methods for modulation of the quorum sensing of bacteria. In an embodiment, the compounds of the present invention are able to act as replacements for naturally occurring bacterial quorum sensing ligands in a ligand-protein binding system; that is, they imitate the effect of natural ligands and produce an agonistic effect. In another embodiment, the compounds of the present invention are able to act in a manner which disturbs or inhibits the naturally occurring ligand-protein binding system in quorum sensing bacteria; that is, they produce an antagonistic effect. The compounds of the present invention comprise N-acylated-homoserine lactones (AHLs) comprised of a wide range of acyl groups.
摘要:
Discloses is a process for preparation of a compound of formula 11, or a derivative thereof, wherein PG1 is an alcohol protecting group. Also, disclosed are intermediates and processes for their preparation. The compound of formula 11 can be useful in the preparation of halinchondrin analogs.
摘要:
Described is a method for the preparation of renin inhibitors such as aliskiren, and intermediates useful therein. The method introduces a nitrogen-containing intermediate such as a lactone of formula (8). with R4 being a branched C3—6 alkyl. In the preparation of the lactone, or related intermediates, a desired stereochemical configuration can be controlled by starting from a chiral aldehyde satisfying formula (10).