56881-57-3Relevant academic research and scientific papers
Enzymatic formation of indole-containing unnatural cyclic polyprenoids by bacterial squalene:hopene cyclase
Tanaka, Hideya,Noguchi, Hiroshi,Abe, Ikuro
, p. 5873 - 5876 (2005)
(Chemical Equation Presented) Two indole-containing substrate analogues, in which a C20 isoprene unit is connected to indole (3-(geranylgeranyl)indole and 3-(farnesyldimethylallyl)indole), were synthesized and tested for enzymatic cyclization by squalene:hopene cyclase from Alicyclobacillus acidocaldarius. Interestingly, 3-(geranylgeranyl)indole was not a substrate for the bacterial squalene cyclase, while 3-(farnesyldimethylallyl) indole was efficiently converted to a 2:1 mixture of unnatural novel products.
Protein degradation targeting chimeric compound, preparation method and medical application thereof
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Paragraph 0218-0219; 0222-0223, (2021/03/31)
The invention relates to a protein degradation targeting chimeric compound, a preparation method and medical application thereof, specifically to a compound as shown in a general formula (I), a preparation method of the compound, and application of the co
METHODS OF SYNTHESIZING FARNESYL DIBENZODIAZEPINONES
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Paragraph 0045; 0070-0071, (2021/12/08)
The present invention is directed to synthetic means for producing farnesyl dibenzodiazepinone compounds, including AMO-01.
CHINONE-, HYDROCHINOME- AND NAPHTHOCHINONE-ANALOGUES OF VATIQUIONE FOR TREATMENT OF MITOCHONDRIAL DISORDER DISEASES
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Page/Page column 187, (2021/04/10)
The disclosure provides therapeutic compositions (i.e., therapeutic agents) and methods of preventing or treating Friedreich's ataxia in a mammalian subject, reducing risk factors, signs and/or symptoms associated with Friedreich's ataxia (e.g. Complex I deficiency), and/or reducing the likelihood or severity of Friedreich's ataxia. The disclosure further provides novel intermediates for the production of said therapeutic compositions and related reduced versions of said therapeutic compositions, which reduce forms may also be used as therapeutic agents (or prodrugs of the therapeutic agent(s)).
Regiospecific Synthesis of Calcium-Independent Daptomycin Antibiotics using a Chemoenzymatic Method
Mupparapu, Nagaraju,Lin, Yu-Hsin Cindy,Kim, Tae Ho,Elshahawi, Sherif I.
supporting information, p. 4176 - 4182 (2021/02/01)
Daptomycin (DAP) is a calcium (Ca2+)-dependent FDA-approved antibiotic drug for the treatment of Gram-positive infections. It possesses a complex pharmacophore hampering derivatization and/or synthesis of analogues. To mimic the Ca2+-binding effect, we used a chemoenzymatic approach to modify the tryptophan (Trp) residue of DAP and synthesize kinetically characterized and structurally elucidated regiospecific Trp-modified DAP analogues. We demonstrated that the modified DAPs are several times more active than the parent molecule against antibiotic-susceptible and antibiotic-resistant Gram-positive bacteria. Strikingly, and in contrast to the parent molecule, the DAP derivatives do not rely on calcium or any additional elements for activity.
ANTIBIOTIC COMPOUNDS
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Paragraph 00117, (2021/04/02)
Provided herein are lipidated glycopeptide compounds of formula (I); or a pharmaceutically acceptable salt, stereoisomer, solvate, or prodrug thereof. R1 is a lipid, R2 is -H or a lipid, and R3 and R4 are as defined herein. These compounds have antibiotic activity. Also provided are formulations comprising such compounds; as well as such compounds or formulations for use as a medicament. The compounds and formulations may also be used in the treatment of bacterial infection.
BIOSYNTHESIS OF CHEMICALLY DIVERSIFIED NON-NATURAL TERPENE PRODUCTS
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Page/Page column 116-120; 130-133; 138-139; 146-147, (2021/05/15)
The disclosure relates to compounds of the formulae (l)-(IV) and their use as substrates for making terpenoids. New substrates for terpene biosynthesis and methods for making new types of terpenes are described herein. Diterpenes occupy a unique molecular
Ferulin C triggers potent PAK1 and p21-mediated anti-tumor effects in breast cancer by inhibiting Tubulin polymerization in vitro and in vivo
He, Zhendan,Huang, Jian,Pan, Dabo,Wang, Jinhui,Yao, Dahong,Zhang, Jin,Zhen, Yongqi
, (2019/12/26)
Ferulin C, a natural sesquiterpene coumarin, isolated from the roots of Ferula ferulaeoides (Steud.) Korov, displaying potent antiproliferatory activity against breast cancer cells. This study aimed to elucidate the underlying molecular mechanisms of Ferulin C-induced breast cancer cells death in vitro and in vivo. Ferulin C presented potent antiproliferatory activity against MCF-7 and MDA-MB-231 cells and remarkable tubulin polymerization inhibitory activity (IC50 = 9.2 μM). Meanwhile, we predicted Ferulin C bind to the Colchicine site of tubulin through CETSA assay, molecular docking and molecular dynamics (MD) simulations. In immunofluorescence assay, Ferulin C disturbed the microtubule integrity and structure. Furthermore, Ferulin C stimulated significant cell cycle arrest in the G1/S period via p21Cip1/Waf1 - CDK2 signaling, induced classic cell apoptosis, impaired metastasis via down-regulating Ras-Raf-ERK and AKT-mTOR signaling. Intriguingly, Ferulin C treatment induced autophagy by ULK1 signaling to synergize with the inhibition of proliferation and metastasis. Based upon the RNAseq analysis, PAK1, as a novel essential modulator, was involved in the signaling regulated by Ferulin C -induced α/β-tubulin depolymerization. Additionally, Ferulin C displayed an acceptable antiproliferatory activity in an MCF-7 xenograft model without inducing obvious weight loss in the Ferulin C treated mice. Summarily, our findings substantiated that Ferulin C was a potent, colchicine site binding microtubule-destabilizing agent with anti-proliferation and anti-metastasis activity via PAK1 and p21-mediated signaling in breast cancer cells.
Synergistic factors ensue high expediency in the synthesis of menaquinone [K2] analogue MK-6: Application to access an efficient one-pot protocol to MK-9
Yerramsetti, Nanaji,Dampanaboina, Lavanya,Mendu, Venugopal,Battula, Satyanarayana
, (2020/11/12)
Here we report a practical and efficient method for the synthesis of menaquinone vitamin (K2) analog MK-6 in all trans forms through “1 + 5 convergent synthetic approach” of pentaprenyl chloride with monoprenyl menadione derivative. In the synergistic factors, less efficient leaving group/more efficient nucleophile (Cl) in the substrate makes it more prominent reaction by eliminating all Sn2’ side reaction products. Further, the addition of acetic acid in the last step (desulfonation) of reaction sequence removes the limitations of the reactions in terms of cyclized side product (multiple reactions of pentaprenyl alcohol with Et3B), byproduct (Et3B, incendiary compound) formations and their interruption in the tricky purification processes. The utility of this method was further extended to find an efficient one-pot synthesis to MK-9 to the gram scale synthesis. This approach is economical and efficient and avoids the awkward chromatographic separation processes.
On the mechanism of ophiobolin F synthase and the absolute configuration of its product by isotopic labelling experiments
Dickschat, Jeroen S.,Quan, Zhiyang
supporting information, p. 6072 - 6076 (2020/10/27)
An ophiobolin F synthase homolog was discovered from Aspergillus calidoustus CBS121601. The cyclisation mechanism of this terpene synthase was investigated by extensive isotopic labelling experiments and the absolute configuration of its product ophioboli
