6892-68-8Relevant academic research and scientific papers
Preparation method of 1, 4-dithiothreitol
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Paragraph 0038-0039; 0042-0044; 0047-0049; 0052-0054; 0057, (2020/12/15)
The invention discloses a preparation method of 1, 4-dithiothreitol, and the method comprises the following steps of: carrying out oxidation reaction on 1, 4-disulfonic acid-2-butene serving as an initial raw material and an oxidant to obtain a first intermediate; hydrolyzing the first intermediate obtained in the S1 in alkali liquor to obtain a second intermediate; and carrying out reduction reaction on the second intermediate obtained in the S2 and a reducing agent to prepare the 1, 4-dithiothreitol. According to the method, 1, 4-disulfonic acid-2-butene is used as the initial raw material,the dithiothreitol is synthesized through the three steps of oxidation, hydrolysis and reduction, the preparation method is simple in process and high in yield, the yield is 77% or above, and the application performance of the obtained product is consistent with that of a conventional product.
Intermediate compound for synthesizing dithioerythritol, application of intermediate compound and synthesis method of dithioerythritol
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Paragraph 0046-0048; 0051, (2020/05/14)
The invention discloses an intermediate compound for synthesizing dithioerythritol, an application of the intermediate compound and a synthesis method of the dithioerythritol. The intermediate compound is 2, 3-diacetyl thiomethylethylene oxide, and the chemical formula of the intermediate compound is shown in the specification, and the intermediate compound can be prepared by performing substitution reaction on 2, 3-dibromomethylethylene oxide and thioacetate. The synthesis method of the dithioerythritol comprises the step of carrying out hydrolysis reaction on the intermediate compound. The 2, 3-diacetyl thiomethylethylene oxide can be directly hydrolyzed to obtain the dithioerythritol, the preparation of the 2, 3-diacetyl thiomethyl ethylene oxide is simple, a new synthesis idea is provided for the synthesis of the dithioerythritol, the synthesis route is short, the operation is simple and convenient, and the yield is high.
Charge Accumulation and Multi-Electron Photoredox Chemistry with a Sensitizer–Catalyst–Sensitizer Triad
Nomrowski, Julia,Guo, Xingwei,Wenger, Oliver S.
, p. 14084 - 14087 (2018/09/11)
Photoinduced electron transfer in donor–sensitizer–acceptor compounds usually leads to simple electron–hole pairs, and photoredox catalysis typically relies on single-electron transfer (SET) events. This work reports on a molecular triad able to accumulate two electrons on a central dibenzo[1,2]dithiin moiety flanked by two peripheral RuII photosensitizers. Under continuous illumination, the doubly reduced form of the dibenzo[1,2]dithiin undergoes thiolate–disulfide exchange with an aliphatic disulfide substrate, thereby acting as a two-electron catalyst after two initial SET events with triethylamine at the RuII sensitizers. The use of a relatively simple triad for coupling two separate SET processes to a subsequent two-electron reduction is an important conceptual advance from photoinduced SET and light-driven charge accumulation towards multi-electron photoredox catalysis. This is relevant for artificial photosynthesis and light-driven multi-electron chemistry in general.
METHOD FOR THE PRODUCTION OF BISEPOXIDES AND DITHIOLS
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Page/Page column 17; 18, (2008/06/13)
The invention relates to a method for the production of bisepoxides, characterised in that a conjugated diene of formula (I) is reacted with at least one peroxide with the application of up to 4 equivalents of peroxide per C-C double bond, where R1 is selected from hydrogen and C1-C12 alkyl, unsubstituted or substituted with one or several SH or OH groups, in the presence of a catalyst, obtained by the bringing into contact of at least one manganese compound, selected from A2MnX4, AMnX3, MnY, MnX2 and MnX3 with at least one ligand L, of general formula (II), whereby the variables have the following definitions: X may be the same or different and is selected from monovalent anions, Y is a divalent anion, A is selected from alkali metals and optionally alkylated ammonium, R2 may be different or preferably the same and selected from C1-C20 alkyl and at least one co-ligand, derived from monocarboxylic acids, di- or poly-carboxylic acids or diamines.
Micellar systems
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, (2008/06/13)
A complex is described that is deliverable to a cell comprising inserting a nucleic acid or other cargo into a reverse micelle. The reverse micelle has the property to compact the nucleic acid for easier delivery.
Phosphine-assisted rearrangement of 4,5-dihydroxy-1,2-dithianes to 4-hydroxy-3-mercaptotetrahydrothiophenes
Lee, Sang Hyup,Kohn, Harold
, p. 47 - 56 (2007/10/03)
Treatment of 4,5-dihydroxy-1,2-dithianes with trialkylphosphines and triphenylphosphine under neutral and moderately basic conditions led to the efficient and stereospecific production of 4-hydroxy-3-mercaptotetrahydrothiophenes. The reaction is projected
4-hydroxyquinoline-3-carboxamides and hydrazides as antiviral agents
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, (2008/06/13)
The present invention provides 4-hydroxyquinoline-3-carboxamide and hydrazide compounds of formula I These compounds are useful to treat or prevent the herpesviral infections, particularly, human cytomegaloviral infection.
Interleukin-2/viral antigen protein chimers
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, (2008/06/13)
Disclosed are (1) a fused protein obtained by combining an antigen used for vaccine and a lymphokine by the application of gene engineering, (2) a recombinant DNA containing a nucleotide sequence coding for the above fused protein, (3) a transformant bearing the above recombinant DNA, (4) a method for producing the fused protein which comprises cultivating the above transformant, producing and accumulating the above fused protein in a culture, and collecting the fused protein, and (5) a hybrid protein obtained by chemically combining an antigen used for vaccine with a lymphokine. The resulting fused and hybrid proteins have strong immunogenicity.
BIOLOGICALLY ACTIVE COMPOUNDS ISOLATED FROM AEROBIC FERMENTATION OF TRICHODERMA VIRIDE
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, (2008/06/13)
This invention relates to compounds of structural formula (I) isolated from an aerobic fermentation of Trichoderma viride MF5628, ATCC 74084: (I) which are squalene synthase inhibitors and thus useful as cholesterol lowering agents. These compounds are also potent antifungal agents. Additionally, they inhibit farnesyl protein transferase and farnesylation of the oncogene protein Ras and are thus useful in treating cancer. This invention also relates to a process for obtaining compounds of structural formula (I)
Process for reconfiguring keratin fibre
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, (2008/06/13)
A process of recofiguring keratin fibre is disclosed. The process includes rolling, winding, curling, looping lapping, folding, twirling, bending, curving, twisting, coiling, twining, entwining or straightening the keratin fibre or leaving the keratin fibre unchanged. A reducing agent is then applied to the keratin fibre to reduce cystine disulfide linkages and other susceptible linkages in the keratin fibre. An oxidizing agent is applied to the keratin fibre having the reducing agent, to set cystine disulfide linkages in the keratin fibre. The reducing agent and the oxidizing agent are then removed from the keratin fibre by rinsing the keratin fibre.

