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首页 / 专利库 / 氧四环素 / 专利数据
序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
101 製備 –6–脫氧四環素之改良方法 TW06310582 1974-03-25 TW018523B 1975-05-01 THOMAS ARTHUR MORRIS, JR.,
102 Fermentative production of nu-ethyloxytetracycline US44222365 1965-01-21 US3390055A 1968-06-25 DULANEY EUGENE L; IRVING PUTTER
103 Process for the production of alpha-6-deoxytetracyclines US552839 1990-07-12 US5049683A 1991-09-17 George Krsek
A process for the preparation of alpha-6-deoxytetracyclines from the corresponding 6-methylenetetracyclines is described using a silica-supported heterogeneous rhodium catalyst: ##STR1## The process stereospecifically produces the alpha epimers at higher yields while using lower rhodium metal levels than prior methods.
104 Process for the production of alpha-6-deoxytetracyclines US337288 1989-04-13 US4997959A 1991-03-05 Jagmohan Khanna; Kiran Bala; Inder P. S. Grover
A process for the hydrogenation of a 6-methylenetetracycline in the production of alpha-6-deoxytetracycline, particularly the antibiotic doxycycline, in the presence of a transition metal complex of the formula MCl.sub.x (PPh.sub.3).sub.y wherein M is Cu, Co or Ni, x is 1 or 2 and y is 1-3, and a trace of rhodium either as the supported metal or as a rhodium salt, as a hydrogenation catalyst. The desired alpha-6-deoxytetracycline product is produced in high yields and stereospecificities. The process requires the use of substantially cheaper transition metal complexes and only traces of rhodium in the hydrogenation catalyst per mole of the 6-methylene tetracycline hydrogenated.
105 Process for the preparation of .alpha.-6-deoxytetracyclines US458067 1983-01-14 US4500458A 1985-02-19 Ivan Villax; Philip R. Page
An improved process for the preparation of .alpha.-6-deoxytetracyclines and more particularly to the stereo specific hydrogenation of the 6-methylene group of 6-deoxy-6-demethyl-6-methylene-5-hydroxytetracyline and of its 11a-halo-analog, is described in which the catalyst is the reaction product of a rhodium salt or a complex with a hydrazine or salt thereof.
106 7-and 9-alkylamino-6-deoxytetracycline US28134963 1963-05-17 US3226436A 1965-12-28 JOSEPH PETLSI; HOWARD BOOTHE JAMES
107 옥씨 테트라싸이클린 및 벤지싸이드의 제조 방법 KR1019650000520 1965-07-19 KR1019670000289B1 1967-08-15 애드리아노스피스트루익; 아이알에이졸트에이스디멘
108 Process for the production of alpha-6-deoxytetracyclines US263728 1988-10-28 US4973719A 1990-11-27 Jagmohan Khanna; Kiran Bala; Inder P. S. Grover
A process for the hydrogenation of a 6-methylenetetracycline in the production of alpha-6-deoxytetracyclines, particularly the antibiotic doxycycline, in the presence of hydriodotetrakis (triphenylphosphine) rhodium (I) as a homogenous hydrogenation catalyst. The desired alpha-6-deoxy product is produced in high yields and stereospecificities, the process requiring the use of minimal quantities of rhodium metal in the hydrogenation catalyst per mole of the 6-methylenetetracycline hydrogenated.
109 Water-soluble derivative of 6-deoxy-tetracyclines US616830 1975-09-25 US4060605A 1977-11-29 Gino Cotti
This invention relates to a novel water soluble derivatives of 6-deoxy-tetracyclines, particularly of doxycycline, in which a methionine group is linked to the tetracycline group through a methylene bridge, thus obtaining a derivative which is not only water soluble at neutral pH, but also endowed with outstanding properties from the point of view of the therapeutical use.
110 Process for producing oxytetra-cycline antibiotic US43533665 1965-02-25 US3408258A 1968-10-29 ARPAD GREIN; RICCARDO BARCHIELLI
111 Process for the preparation of .alpha.-6-deoxytetracyclines US858660 1986-05-01 USRE32535E 1987-10-27 Ivan Villax; Philip R. Page
An improved process for the preparation of .alpha.-6-deoxytetracyclines and more particularly to the stereo specific hydrogenation of the 6-methylene group of 6-deoxy-6-demethyl-6-methylene-5-hydroxytetracyline and of its 11.alpha.-halo-analog, is described in which the catalyst is the reaction product of a rhodium salt or a complex with a hydrazine or salt thereof.
112 Process for the preparation of .alpha.-6-deoxy-tetracyclines US641607 1984-08-17 US4597904A 1986-07-01 Philip R. Page
A process for the preparation of .alpha.-6-deoxy-tetracyclines by the stereoselective heterogeneous hydrogenation of a 6-demethyl-6-deoxy-6-methylene-tetracycline or an acid addition salt thereof, in the presence of a tertiary phosphine, or the simultaneous dehalogenation and stereo-selective heterogeneous hydrogenation of an 11a-halo-6-demethyl-6-deoxy-6-methylene-tetracycline or an acid addition salt thereof, in the presence of a tertiary phosphine, characterized by the use of a rhodium salt catalysts, wherein the rhodium is bonded to a polysiloxane carrier, having the following formulae:Rh Cl.sub.3 [N{(CH.sub.2).sub.3 SiO.sub.3/2 }.sub.3 ].sub.10Rh Cl.sub.3 [N{(CH.sub.2).sub.3 SiO.sub.3/2 }.sub.3 ].sub.12Rh Cl.sub.3 [N{(CH.sub.2).sub.3 SiO.sub.3/2 }.sub.3 ].sub.15Rh Cl.sub.3 [HN{(CH.sub.2).sub.3 SiO.sub.3/2 }.sub.2 ].sub.4Rh Cl.sub.3 [HN{(CH.sub.2).sub.3 SiO.sub.3/2 }.sub.2 ].sub.8permitting easy recovery of the rhodium, by simple filtration.
113 Process for producing .alpha.-6-deoxytetracyclines US421206 1973-12-03 US3954862A 1976-05-04 Thomas A. Morris, Jr.
The catalytic hydrogenation of 6-methylenetetracyclines, or salts of these compounds, in a reaction-inert solvent medium containing a catalytic amount of rhodium metal to which a phosphine and a promoter is added.
114 Hydroxylating 12alpha-deoxytetracycline with ascomyceteae US3488660 1960-06-09 US2970087A 1961-01-31 DONALD BECK; SHULL GILBERT M
115 alpha-6-deoxytetracycline derivatives and process US10614661 1961-05-05 US3200149A 1965-08-10 BLACKWOOD ROBERT K; RENNHARD HANS H; BEEREBOOM JOHN J; STEPHENS JR CHARLES R
116 6–脫氧–四環素的水溶性衍生物之製造方法 TW06312024 1974-09-27 TW024989B 1979-04-01 GINO COTTI
117 Process for the preparation of .alpha.-6-deoxytetracyclines US509055 1974-09-25 US3962331A 1976-06-08 Gino Cotti
This invention relates to a process for the preparation of .alpha.-6-deoxytetracyclines, by the simultaneous reductive dehalogenation and reduction by hydrogen, in a polar solvent of the corresponding 11a-halo-6-demethyl-6-deoxy-6-methylene-tetracycline, in presence of a suitable member of the group of the tertiary phosphines, arsines and stibines, as regards the dehalogenation and of a catalyst, selected from amongst the complexes of noble metals with electron-donor ligands, soluble in the reaction medium, whereby the reaction is carried out according to the mechanism of the homogeneous catalysis.
118 Preparation of 7-halo-6-deoxy-tetracyclines US84530459 1959-10-09 US3036129A 1962-05-22 JOHN HLAVKA JOSEPH; HOWARD BOOTHE JAMES
119 PROCESS FOR THE PRODUCTION OF ALPHA-6-DEOXYTETRACYCLINES EP90902446.0 1990-01-02 EP0452412A1 1991-10-23 KRSEK, George
L'invention concerne un procédé de préparation d'alpha-6-désoxytétracyclines à partir des 6-méthylènetétracyclines correspondantes, utilisant un catalyseur de rhodium hétérogène à support de silice de formule générale (I), dans laquelle R et R' sont chacun choisis entre l'hydrogène et l'alcoyle contenant 1 à 4 atomes de carbone, x est un nombre entier compris entre 1 et 6, Ph représente phényle, y représente un nombre entier compris entre 1 et 3, et L représente un ligand choisi parmis des phosphines d'aloyldiphényle à substitution alcoxysilyle. Ledit procédé produit stéréospécifiquement les épimères alpha à des rendements supérieurs tout en utilisant des niveaux de rhodium inférieurs à ceux des procédés antérieurs.
120 Therapeutic composition comprising tetracycline and a dioxolane US80457759 1959-04-07 US3004894A 1961-10-17 JOHNSON RICHARD H; WALLACH DONALD P