72-63-9Relevant articles and documents
Natural Product Diversification by One-Step Biocatalysis using Human P450 3A4
Fessner, Nico D.,Grimm, Christopher,Srdi?, Matic,Weber, Hansj?rg,Kroutil, Wolfgang,Schwaneberg, Ulrich,Glieder, Anton
, (2021/12/03)
Efficient synthetic techniques for the diversification of natural products are incremental for drug discovery processes of the pharmaceutical industry because these complex bioactive compounds often require an adjustment of properties. Human liver P450 3A4, key player of the body's detoxification system and decisive factor of a drug's metabolic fate, is renowned for its broad substrate scope including many natural products. In this study, we investigated the synthetic potential of human P450 3A4 for the diversification of natural product classes and isolated the produced metabolites of six selected natural products at a preparative 100-mg scale. Aided by efficient expression levels in P. pastoris, this whole-cell biocatalyst was found to be highly effective at the intended job allowing the identification of a total of 31 authentic human metabolites, many of them for the first time. By revealing an unprecedented degree of diversification, this study extends the synthetic repertoire for efficient enzymatic natural product modification in a one-step fashion and adds a completely new view to an old enzyme traditionally used for inhibition and toxicology studies.
Preparation method of metandienone
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Paragraph 0036-0056, (2019/03/06)
The invention provides a preparation method of metandienone. The method comprises the following steps: adopting 1,4-androstadienedione, namely IDD, as a raw material; introducing alpha-CH3 and beta-OHto 17th site in the presence of methyl-Grignard-reagent, an organic solvent and acid to obtain the metandienone. Compared with a traditional method taking diosgenin as a raw material, a method for preparing the metandienone by taking the IDD as the raw material, disclosed by the invention, has the advantages that sources of raw materials are wide, a process is economic and environmentally-friendly, and the production cost is greatly reduced; besides, the method disclosed by the invention, compared with the traditions method, has the characteristics of short synthesis route, simple and environmentally-friendly process, high product yield and good quality; calculated by the current price of the raw materials, the cost of the raw materials for production is reduced by 40 to 45 percent.
Method for preparing metandienone product
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Paragraph 0036-0042, (2019/03/28)
The invention provides a method for preparing a metandienone product. The method comprises the following steps of: crystallizing and separating deodorized distillates in production of soybean oil to obtain phytosterol, carrying out microbial fermentation on the phytosterol by adopting a nutritional culture medium and one or more microorganism bacteria to obtain 1,4-androstadienedione, i.e. IDD, then preparing metandienone in the presence of methylmagnesium halide, an organic solvent and acid by using the IDD as a raw material, and refining the metandienone to obtain the metandienone product. The metandienone is prepared by adopting the IDD as the raw material; and compared with a traditional method adopting diosgenin as the raw material, the method of the invention has the advantages thatthe source of the raw materials is wide, the process is economical and environmentally friendly, and the production cost is greatly reduced. Compared with a traditional production method, the method of the invention has the advantages of short synthetic route, simple and environment-friendly process, high product yield, and good quality; and by calculating at the price of the raw material at present, the cost of the production raw material can be reduced by 40 to 45 percent.
Method for preparing metandienone
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Paragraph 0036-0042, (2019/03/06)
The invention provides a method for preparing metandienone, the method comprises firstly using a nutrient medium and one or more microbial strains, performing microbial fermentation on phytosterol toprepare 1,4-androstenedione, namely IDD, then using the IDD as the raw material, introducing alpha-CH3 and beta-OH into a 17 site with the existence of methyl magnesium halide, an organic solvent andan acid, and preparing the metandienone. The method uses the IDD as the raw material to prepare the metandienone, compared with the traditional method taking diosgenin as the raw material, the sourceof the raw material is wide, the process is economical and environmentally friendly, and the production cost is greatly reduced. Compared with the traditional production method, the synthesis route isshort, the process is simple, convenient and environmentally friendly, the yield of a product is high, the quality is high, and the cost of the raw material for production is reduced by 40-45% according to the current price of the raw material.
Preparation method of metandienone product
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Paragraph 0036-0042, (2019/03/28)
The invention provides a preparation method of a metandienone product. The preparation method comprises the following steps that 1,4-androstenedione, namely IDD, is adopted as a raw material, in the presence of methylmagnesium chloride, an organic solvent and acid, alpha-CH3 and beta-OH are introduced at the 17 position, and metandienone is prepared; and then the obtained metandienone is heated byactivated carbon in acetone or lower alcohol below C4 for reflow discoloration and is recrystallized, and the metandienone product is obtained. According to the preparation method, the IDD serves asthe raw material to prepare the metandienone, compared with a traditional method adopting diosgenin as a raw material, the raw material source is wide, a process is economic and environmentally friendly, and the production cost is significantly lowered. Compared with a traditional production method, according to the preparation method, a synthesis route is short, the process is easy, convenient and environmentally friendly, the product yield is high, the quality is good, and the production raw material cost is lowered by 40-45% by calculating through the current raw material price.
A practical Δ1-dehydrogenation of Δ4-3-keto-steroids with DDQ in the presence of TBDMSCl at room temperature
Chen, Kaixiong,Liu, Chang,Deng, Le,Xu, Guangyu
experimental part, p. 513 - 516 (2010/06/21)
A mild and efficient Δ1-dehydrogenation of Δ4-3-keto-steroids with DDQ in the presence of tertbutyldimethylchlorosilane at room temperature was developed.