28715-26-6Relevant articles and documents
Characteristic flavor formation of thermally processed N-(1-deoxy-α-D-ribulos-1-yl)-glycine: Decisive role of additional amino acids and promotional effect of glyoxal
Zhan, Huan,Cui, Heping,Yu, Junhe,Hayat, Khizar,Wu, Xian,Zhang, Xiaoming,Ho, Chi-Tang
, (2021/09/28)
The role of amino acids and α-dicarbonyls in the flavor formation of Amadori rearrangement product (ARP) during thermal processing was investigated. Comparisons of the volatile compounds and their concentrations when N-(1-deoxy-α-D-ribulos-1-yl)-glycine r
Dioxazolones as masked ester surrogates in the Pd(ii)-catalyzed direct C-H arylation of 6,5-fused heterocycles
Saxena, Paridhi,Maida, Neha,Kapur, Manmohan
supporting information, p. 11187 - 11190 (2019/09/30)
A simple and effective Pd(ii)-catalyzed regioselective C(2)-H arylation of 6,5-fused heterocycles with dioxazolones as a masked ester surrogate under mild conditions is reported. The significance of the arylation is highlighted by the new reactivity demonstrated in dioxazolones via proximal C-H activation of the cyclic carbonate of the hydroxamic acid functionality under protic conditions.
Direct Dimesitylborylation of Benzofuran Derivatives by an Iridium-Catalyzed C?H Activation with Silyldimesitylborane
Shishido, Ryosuke,Sasaki, Ikuo,Seki, Tomohiro,Ishiyama, Tatsuo,Ito, Hajime
supporting information, p. 12924 - 12928 (2019/11/05)
Direct dimesitylborylation of benzofuran derivatives by a C?H activation catalyzed by an iridium(I)/N-heterocyclic carbene (NHC) complex in the presence of Ph2MeSi-BMes2 afforded the corresponding dimesitylborylation products in good to high yield with excellent regioselectivity. This method provides a straightforward route to donor–(π-spacer)–acceptor systems with intriguing solvatochromic luminescence properties.
Preparation method of benzofuran compound
-
Paragraph 0110-0113, (2019/04/04)
The invention relates to a preparation method of a benzofuran compound. The preparation method comprises the following steps: putting a furan compound, acetic acid and a Lewis acid catalyst in a reaction vessel, reacting for 0.5-24 h at 80-160 DEG C, and separating and purifying to obtain the benzofuran compound. According to the preparation method provided by the invention, the furan compound isused as a reaction raw material, an acetic acid water solution is used as a solvent, Lewis acid is used as a catalyst, and at a mild reaction temperature (80-160 DEG C), the benzofuran compound is directly obtained through one-step reaction. The preparation method provided by the invention can synthesize the benzofuran compound with a corresponding structure and functional groups based on the structure and functional groups of the furan compound as a raw material, the raw material components are simple , and the process is convenient to operate; wherein the selectivity of the obtained benzofuran is as high as 99% in the process of synthesizing benzofuran by using furan, so that the method has industrial application prospects.
Retinoic acid agonists as preventive and therapeutic agents for nephritis
-
, (2008/06/13)
The present invention provides a therapeutic or prophylactic agent as a substitute for conventional steroids or immunosuppressive agents to treat or prevent systemic erythematosus, glomerulonephritis, lupus nephritis, idiopathic thrombocytopenic purpura or autoimmune anemia. The agent comprises a retinoic acid receptor agonist, specifically a retinoic acid receptor subtype α (RARα) agonist, including for example: (1) carboxylic acid compounds having condensed rings represented by the following formula: ?(wherein the rings L and M are condensed, are the same as or different from each other, and represent an aromatic hydrocarbon which may have a substituent group or a heterocycle which may have a substituent group; the rings A and B are independent of each other and represent an aromatic hydrocarbon ring or heterocycle which may have a substituent group; and D represents a carboxyl group which may have a protective group), (2) 4-{[(3,5-bistrimethylsilylphenyl)carbonyl]amino}benzoic acid, 4-{2-[5-(3-methoxymethyl-5,6,7,8-tetrahydro-5,5,8,8-tetramethylnaphthalene-2-yl)pyrrolyl]}benzoic acid, etc.
Methods for preventing, inhibiting or treating graft rejection reactions in graft-versus-host disease (GVHD) and organ transplantation
-
, (2008/06/13)
The present invention provides remedies for graft-versus-host disease (GVHD) and graft rejection reactions in organ transplantation which comprise retinoic acid receptor (RAR) agonists as an active ingredient. Main examples thereof include 9-(4-methoxy-2,3,6-trimethylphenyl)-7,8-dimethylnona-2,4,6,8-tetraen-1-oic acid, 4-[(E)-2-(5,6,7,8-tetrahydro-5,5,8,8-tetramethylnaphthalen-2-yl)propenyl]benzoic acid, 4-{2-[5-(4,7-dimethylbenzofuran-2-yl)pyrroyl]}benzoic acid, 4-{2-[5-(5-chloro-7-ethylbenzofuran-2-yl)pyrrolyl]}benzoic acid and 4-{2-[5-(4,7-dimethylbenzothiophen-2-yl)pyrrolyl]}benzoic acid.
Discovery of novel and potent retinoic acid receptor α agonists: Syntheses and evaluation of benzofuranyl-pyrrole and benzothiophenyl-pyrrole derivatives
Yoshimura, Hiroyuki,Kikuchi, Kouichi,Hibi, Shigeki,Tagami, Katsuya,Satoh, Takashi,Yamauchi, Toshihiko,Ishibahi, Akira,Tai, Kenji,Hida, Takayuki,Tokuhara, Naoki,Nagai, Mitsuo
, p. 2929 - 2937 (2007/10/03)
In the course of our studies on retinoic acid receptor (RAR) agonists, we have designed and synthesized a series of benzofuran and benzothiophene derivatives. Some of these compounds (1a,b,e,f,j) markedly inhibited LPS- induced B-lymphocyte proliferation and exerted RARα selectivity. One of them, 4-[5-(4,7-dimethylbenzofuran-2-yl)pyrrol-2-yl]benzoic acid (1b), when orally administered significantly inhibited mouse antibody production and delayed type hypersensitivity (DTH) responses from a dose of 0.1 mg/kg.
Carboxylic acid derivatives having fused rings
-
, (2008/06/13)
The present invention provides a medicament exhibiting excellent retinoic acid receptor agonism. A Carboxylic acid derivative having a fused ring which is represented by the following formula or a pharmacologically acceptable salt thereof: {wherein the symbol represents a single bond or a double bond; X, Y, Z, P, Q, U, V and W are each a group represented by the formula: -O- or -S-, or a group represented by the formula: [wherein Rk (k: 1 to 8) is hydrogen, halogeno, optionally substituted lower alkyl or the like, with either of R7 and R8 being a group represented by the formula: (wherein A and B are each independently an optionally substituted aromatic hydrocarbon ring or an optionally substituted unsaturated heterocycle; and D is optionally protected carboxyl)]}.