![]() Process for stabilizing 4-methyl-5-(2-chloroethyl)thiazole
专利摘要:
公开号:SU959626A3 申请号:SU792757925 申请日:1979-04-25 公开日:1982-09-15 发明作者:Фельш Хорст;Хантих Герхард 申请人:Плк Фармасьютикал Лайсенсиз Компани Лтд (Фирма); IPC主号:
专利说明:
The invention relates to a method for stabilizing 4-methyl- 5_ (2-chloroethyl) thiazole of the formula 1 H ′ C P (G) which has a biological active, is insufficiently stable and has an unpleasant sulfurous smell and bitter taste. The aim of the invention is to increase storage stability. This goal is achieved by the fact that according to the method of stabilization of 4-methyl-5 ’(2-chloroethyl) thiazole by mixing it with a carrier, glycerol tricaprinate is used as a carrier, and is used in medicine. A known method of stabilization of 4-methyl-5 ”(2-chloroethyl) thiazole, which consists in mixing it with a non-polar carrier, which consists of one or several animal or vegetable oils or fats, or one or more fatty acids, containing 1422 carbon atoms. In this case, the decomposition of the compound of formula I is suppressed. The preparations obtained are stable during storage for some time £ ll. However, the compound of formula 1 stabilized in a known manner, glycerol tricaprilate, glycerol trilaurate or a neutral oil of composition, weight L: G lysericantricapronate Glycerol tricaprilat Glycerol tricaprinate Until 3 50-65 30-45 * Up to 5% and mixing is carried out under conditions excluding the presence of atmospheric oxygen in an inert gas atmosphere. The compound of formula I, stabilized by the proposed method, can be stored for 4 years. PRI me R 1. The boiler with a stirrer made of special steel with a capacity of 10 l Until 3 50-65 30 - (+ 5 Up to 5 vazapolazot отο in a vacuum version fill 4.0 kg of neutral · oil composition, wt.%: G glycerin trikapronate Glycerol tricaprilat Glycerol tricaprinate Glycerol trilaurate and after removal of air ’by means of - cumulation (10 min, 1 torr) are removed with technically pure nitrogen, while passing directly through the dispenser into neutral oil. Under further nitrogen aeration, with stirring, slowly (200 ml / min) 4.0 kg of freshly-transformed oxygen-free compound 1 with a chloride content of about 0.01% is fed continuously. After 10 minutes of stirring, the mixture filled the transport containers made of special steel. Then, soft gelatin capsules ... (500 mg of the mixture per capsule) are filled with a mixture without air bubbles. Example 2. An evacuated glass boiler (a round-bottom flask with a 5-liter stirrer) is filled with 1.5 kg of tricaprine (glycerol tricaprinate) and, after removal of air by vacuum (10 min, 1 mm Hg), is subjected to gasification with technically pure argon. Through further dispensing, directly into a solution of tricaprine. Under further aeration with argon while stirring • 1.0 kg of freshly distilled oxygen-free compound 1 with a chloride content of about 0.01% are added dropwise continuously for 10 minutes and filled with olnennye argon glass vials (bottles) with a capacity of 3 l. The mixture is then filled without air bubbles are resistant to gastric juice, soluble in the intestine, soft gelatin capsule (600 mg of mixture per capsule). Example 3. A boiler with a 10-liter special steel mixer in vacuum design is filled with 4.0 kg of tricaprilin (glycerol tricaprilat). The stabilization of the compounds of formula I is carried out analogously to example 1. Example 4. A boiler with a special steel mixer with a capacity of 10 l in a vacuum version is filled Order 7036/78 VNIIIPI 959626 4 2.0 kg of trilaurin (glycerol trilaurate) and 2.0 kg of tricaprinate (glycerol tricaprinate) and the process is carried out analogously to example 1. Two mixtures of compound T of a neutral oil are prepared, wt.%: '1 83.5 Compound 1 Neutral Oil The first and second glass flasks of nitrogen are divided, 2 68.8 16,5 mixture was heated at 70 ° C and atmosfe100 and 170 h, mixture mixture during the expansion joint 100 hours. 3,5 0.5 and op1 ° / I, -Ό ► h. 170 m 0.5 second mixture is heated t The first and a glass flask in an atmosphere of air at 70 ° C for 170 h and determine the decomposition of compound 1,%: Mixture 1 14.1 Mixture 2 3.7 The results of the experiments show that the addition of a neutral oil in the form of a mixture of triglycerides of saturated fatty acids reduces the decomposition of the CMT compound I. With an increase in the concentration of neutral oil, this stabilizing effect increases.
权利要求:
Claims (1) [1] Claim The method of stabilization of 4-methyl-5 “(2-chloroethyl) thiazole by mixing it with a carrier, characterized in that, in order to increase storage stability, glycerol tricaprinate, glycerol tricaprilate, glycerol trilaurate or neutral oil, wt.% Are used as a carrier: G litserintrikapronat Glycerin tricaprilat G glycerin tricaprinate Glycerol trilaurate mixing is carried out excluding the presence of the spirit in an inert gas atmosphere ..
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同族专利:
公开号 | 公开日 HU179741B|1982-12-28| CS208779B2|1981-09-15| AU523518B2|1982-07-29| AU4637379A|1979-11-01| AT358530B|1980-09-10| IE48778B1|1985-05-15| NO150317B|1984-06-18| CA1113941A|1981-12-08| NZ190240A|1980-10-24| DD142962A5|1980-07-23| DE2916573C2|1982-09-02| FI66120C|1984-09-10| PT69532A|1979-05-01| IE790836L|1979-10-25| FI791324A|1979-10-26| YU91079A|1984-10-31| JPS6337791B2|1988-07-27| FI66120B|1984-05-31| EP0005121A3|1979-11-28| EP0005121A2|1979-10-31| EP0005121B1|1982-10-13| YU42302B|1988-08-31| JPS54147914A|1979-11-19| IL57292A|1982-11-30| UA5545A1|1994-12-28| DE2963835D1|1982-11-18| NO791339L|1979-10-26| DK155978C|1989-10-30| US4247702A|1981-01-27| ES480590A1|1980-08-16| ZA791661B|1980-04-30| ATA296178A|1980-02-15| DK155978B|1989-06-12| DK167879A|1979-10-26| DE2916573A1|1979-10-31| GR66987B|1981-05-15| NO150317C|1984-09-26|
引用文献:
公开号 | 申请日 | 公开日 | 申请人 | 专利标题 US2844512A|1954-11-05|1958-07-22|Upjohn Co|Fumagillin enveloped in fatty or waxy substance and enclosed in ultraviolet opaque container| US3265629A|1958-12-22|1966-08-09|Ncr Co|Coating by phase separation| US3146167A|1961-10-05|1964-08-25|Smith Kline French Lab|Method of preparing sustained release pellets and products thereof| FR1416304A|1961-10-10|1965-11-05|Smith Kline French Lab|Improvements to tablets and tablets containing a large amount of active ingredient released over a prolonged period of time, and to processes for their preparation| FR1536904A|1962-12-19|1968-09-02|Smith Kline French Lab|Process for preparing pharmaceutical pills with progressive release of their active principle| SE319577B|1966-03-08|1970-01-19|Astra Ab| JPS4971127A|1972-11-18|1974-07-10| NL189235C|1974-02-28|1993-02-16|Akzo Nv|METHOD FOR THE PREPARATION OF AN ORAL PHARMACEUTICAL PREPARATION WITH ANDROGENIC ACTION| NL7510104A|1975-08-27|1977-03-01|Akzo Nv|PROCESS FOR THE PREPARATION OF AN ORAL ACTIVE PHARMACEUTICAL PREPARATION.| DE2631281A1|1976-07-12|1978-01-19|Kali Chemie Pharma Gmbh|Increasing solubility of pharmaceuticals for use in gelatin capsules - by dissolving in fatty acid mono:glyceride and opt. di:glyceride cpds.| US4202888A|1976-07-12|1980-05-13|Kali-Chemie Pharma Gmbh.|Readily enterally absorbable pharmaceutical compositions of cardiac glycosides and preparation thereof|JPS58159425A|1982-03-18|1983-09-21|Fujisawa Pharmaceut Co Ltd|Gel base| SE9303281D0|1993-10-07|1993-10-07|Astra Ab|New formulation| AT267189T|1999-10-15|2004-06-15|Sucampo Ag|BIZYCLIC COMPOSITIONS AND METHOD FOR THEIR STABILIZATION| US9884024B2|2005-12-27|2018-02-06|Hemant N Joshi|Physically dispersed, molecularly dissolved and/or chemically bound drug in an empty, hard capsule shell composition| JP2013032289A|2009-10-28|2013-02-14|Daiichi Sankyo Co Ltd|Wax stable formulation|
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申请号 | 申请日 | 专利标题 AT296178A|AT358530B|1978-04-25|1978-04-25|STABILIZATION PROCEDURE|LV930686A| LV5492A3|1978-04-25|1993-06-28|Panemiens for the stabilization of 4-methyl-5-thiazole| LTRP949A| LT2255B|1978-04-25|1993-09-06|4-METHYL-5-THIAZOL STABILIZATION BUDGET| 相关专利
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