- Synthesis and Stereochemical Assignment of Conioidine A: DNA- And HSA-Binding Studies of the Four Diastereomers
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Conioidine A (1), isolated in 1993 with unknown relative and absolute configuration, was suggested to be a DNA-binding compound by an indirect technique. Four stereoisomers of conioidine A have been synthesized from d- and l-proline, and the natural product has been identified as possessing (4R,6R) absolute configuration. Binding of the conioidine diastereomers to calf thymus DNA (CT DNA) and human serum albumin (HSA) has been investigated by fluorescence spectroscopy and isothermal titration calorimetry (ITC). All stereoisomers display at least an order of magnitude weaker binding to DNA than the control compound netropsin; however, a strong association with HSA was observed for the (4R,6S) stereoisomer.
- Shaktah, Ryan,Vardanyan, Laura,David, Elroma,Aleman, Alexis,Orr, Dupre,Shaktah, Lawrence A.,Tamae, Daniel,Minehan, Thomas
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supporting information
p. 3191 - 3198
(2020/11/03)
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- Pyrrolidine-Oxadiazolone Conjugates as Organocatalysts in Asymmetric Michael Reaction
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Pyrrolidine-oxadiazolone based organocatalysts are envisaged, synthesized, and utilized for asymmetric Michael reactions. Results of the investigations suggest that some of the catalysts are indeed efficient for stereoselective 1,4-conjugated Michael additions (dr: >97:3, ee up to 99%) in high chemical yields (up to 97%) often in short reaction time. As an extension, one enantiopure Michael adduct has been utilized to synthesize optically active octahydroindole.
- Mahato, Chandan K.,Mukherjee, Sayan,Kundu, Mrinalkanti,Pramanik, Animesh
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p. 1053 - 1063
(2019/01/14)
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- AUTOPHAGY-INHIBITING COMPOUNDS AND USES THEREOF
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The present disclosure describes a compound for use in the treatment of cancer, infectious disease, and autoimmune disorders. The compounds herein can inhibit autophagy in an affected cell to promote cell death. Further, the compound can be used to overco
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Paragraph 00277
(2017/04/04)
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- METHODS OF TREATING LIVER DISEASES
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The invention provides tricyclic compounds and their use in treating liver disorders, such as non-alcoholic steatohepatitis and related disorders (e.g., fibrosis). The compounds are contemplated to have activity against methionyl aminopeptidase 2.
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Paragraph 00410
(2014/05/24)
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- HETEROAROMATIC COMPOUNDS AS BTK INHIBITORS
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The present invention encompasses compounds of the formula (I) wherein the groups A, Cy, X1 and Y are defined herein, which are suitable for the treatment of diseases related to BTK, process of making, pharmaceutical preparations which contain compounds and their methods of use.
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Paragraph 0122; 0123
(2014/03/21)
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- PARTIALLY SATURATED TRICYCLIC COMPOUNDS AND METHODS OF MAKING AND USING SAME
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The invention provides tricyclic compounds and their use in treating medical disorders, such as obesity. Pharmaceutical compositions and methods of making various tricyclic compounds are provided. The compounds are contemplated to have activity against methionyl aminopeptidase 2.
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- N-ACYL CYCLIC AMINE DERIVATIVE OR PHARMACEUTICALLY ACCEPTABLE SALT THEREOF
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The present invention provides compounds which show high effectiveness against positive symptoms, negative symptoms and cognitive dysfunction in schizophrenia and reduce conventional side-effect risks as well as have remarkable effects for central neurolo
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Page/Page column 63-64
(2011/10/05)
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- Amino/guanidino-functionalized N-(pyrrolidin-2-ethyl)glycine-based pet-PNA: Design, synthesis and binding with DNA/RNA
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The N-(pyrrolidin-2-ethyl) glycine-based PNA (pet-PNA) backbone, with 4-amino or 4-guanidino-functionalized pyrrolidine ring, confers constrained conformational flexibility on aegPNA. The oligomers bind to the target DNA and RNA sequences with increased sequence specificity and antiparallel versus parallel orientation selectivity. The easy post-synthetic guanidination gives very good access to the positively charged PNA oligomers.
- Gokhale, Sachin S.,Kumar, Vaijayanti A.
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experimental part
p. 3742 - 3750
(2010/09/06)
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- Selenium promoted synthesis of enantiopure pyrrolidines starting from chiral aminoalcohols
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Starting from commercially available enantiomerically pure aminoalcohols and using simple conversions promoted by organoselenium reagents, several enantiomerically pure substituted pyrrolidines were prepared. After double protections (R)- or (S)-2-phenylg
- Tiecco, Marcello,Testaferri, Lorenzo,Bagnoli, Luana,Scarponi, Catalina,Temperini, Andrea,Marini, Francesca,Santi, Claudio
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p. 2758 - 2767
(2008/03/28)
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- POLYCYCLIC CARBAMOYLPYRIDONE DERIVATIVE HAVING HIV INTEGRASE INHIBITORY ACTIVITY
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The present invention is to provide a novel compound (I), having the anti-virus activity, particularly the HIV integrase inhibitory activity, and a drug containing the same, particularly an anti-HIV drug, as well as a process and an intermediate thereof. Compound (I) wherein Z1 is NR4; R1 is hydrogen or lower alkyl; X is a single bond, a hetero atom group selected from O, S, SO, SO2 and NH, or lower alkylene or lower alkenylene in which the hetero atom group may intervene; R2 is optionally substituted aryl; R3 is hydrogen, a halogen, hydroxy, optionally substituted lower alkyl etc; and R4 and Z2 part taken together forms a ring, to form a polycyclic compound, including e.g., a tricyclic or tetracyclic compound.
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Page/Page column 121; 133
(2010/11/24)
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- HISTAMINE H3 RECEPTOR LIGANDS
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Compounds of formula (I) (and pharmaceutically acceptable salts thereof) are histamine H3 receptor ligands. A in the formula represents (CH2)m, m being from 1 to 3; B is (CH2)n, n being from 1 to 3; x is from 0 to 2; Ris C1 to C10 hydrocarbyl, in which up to 2 carbon atoms may be replaced by O, S or N; and up to 2 hydrogen atoms may be replaced by halogen; Ris H or C1 to C15 hydrocarbyl, in which up to 3 carbon atoms may be replaced by O, S or N, and up to 3 hydrogen atoms may be replaced by halogen; Ris absent when -Y-Z-R2 is attached to W, or is H or C1 to C7 hydrocarbyl when -Y-Z-Ris not attached to W; W is nitrogen; X is -CH2-, -O- or -NR-, Rbeing H or C1 to C3 alkyl; Y replaces a hydrogen atom on any of A, B, W and X, and is C2 to C10 alkylene, in which one non-terminal carbon atom may be replaced by O; and Z is (II), (III), (IV), (V), (VI), or (VII) wherein R, Rand Rare independently H or C1 to C15 hydrocarbyl, in which up to 3 carbon atoms may be replaced by O or N, and up to 3 hydrogen atoms may be replaced by halogen, and Q is H or methyl, or Q is linked to Ror Rto form a five-membered ring or Q is linked to Rto form a six-membered ring
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- INHIBITORS OF HUMAN TUMOR-EXPRESSED CCXCKR2
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Pharmaceutical compositions containing organic compounds or salts thereof that serve as modulators for the SDF-1 or I-TAC chemokines are disclosed. The compounds and compositions are useful in the treatment of cancer, especially in the inhibition of cancer proliferation, growth, and metastasis. Methods of interfering with SDF-1 and/or I-TAC binding to the CCXCKR2 receptor and treating cancer using the compounds and pharmaceutical compositions of the present invention are also disclosed.
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- Aminoalkylpyrrolidine serotonin receptor ligands and compositions, their pharmaceutical uses, and methods for their synthesis
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Novel aminoalkylpyrrolidine 5-HT7 receptor ligands, methods of preparing such ligands, intermediate compounds useful in the preparation of the receptor ligands, pharmaceutical compositions comprising the receptor ligands, and methods of treatin
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- Endomorphin-1 analogues containing β-proline are μ-opioid receptor agonists and display enhanced enzymatic hydrolysis resistance
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In this paper we describe the synthesis and affinity toward the μ-opioid receptor of some tetrapeptides obtained from endomorphin-1, H-Tyr-Pro-Trp-Phe-NH2 (1), by substituting each amino acid in turn with its homologue. The ability to bind μ -opioid receptors depends on the β-amino acid, and in particular 4, which contains β-L-Pro, has a KI, in the nanomolar range. The peptides 4 and 5 are significantly more resistant to enzymatic hydrolysis than 1. The same compounds, as well as the μ-opioid receptor agonist DAMGO, produced a concentration-dependent inhibition of forskolin-stimulated cyclic AMP formation, thus behaving as μ-opioid agonists. These features suggest that this novel class of endomorphin-1 analogues may represent suitable candidates for the in vivo investigation as potential μ-opioid receptor agonists.
- Cardillo, Giuliana,Gentilucci, Luca,Qasem, Ahmed R.,Sgarzi, Fabio,Spampinato, Santi
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p. 2571 - 2578
(2007/10/03)
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- Synthesis of homochiral N-Boc-β-aminoaldehydes from N-Boc-β-aminonitriles
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Enantiopure N-Boc-β-aminoaldehydes are efficiently prepared in good yields from N-Boc-β-aminonitriles by reduction of the nitrile function with diisobutylaluminium hydride (DIBAL-H) - Keywords: β-aminoaldehyde; β-aminonitrile; α-aminoacid; homochiral; enantiomeric excess; reduction; DIBAL-H
- Toujas, Jean-Louis,Jost, Eric,Vaultier, Michel
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p. 713 - 718
(2007/10/03)
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- An enantioselective michael addition of soft nucleophiles to prochiral enone catalyzed by (2-Pyrrolidyl)alkyl ammonium hydroxide
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(S)-N-(2-Pyrrolidylmethyl)-N,N,N-trimethylammonium hydoxide catalyzes the asymmetric Michael addition of soft nucleophiles to enones with moderate to high enantiomeric excess through ion-pair rather than steric control.
- Kawara, Akihiro,Taguchi, Takeo
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p. 8805 - 8808
(2007/10/02)
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