DE1097998B - Process for the production of new 1, 2, 4-oxadiazoles - Google Patents
Process for the production of new 1, 2, 4-oxadiazolesInfo
- Publication number
- DE1097998B DE1097998B DEA32952A DEA0032952A DE1097998B DE 1097998 B DE1097998 B DE 1097998B DE A32952 A DEA32952 A DE A32952A DE A0032952 A DEA0032952 A DE A0032952A DE 1097998 B DE1097998 B DE 1097998B
- Authority
- DE
- Germany
- Prior art keywords
- ions
- found
- cln
- calculated
- oxadiazoles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D271/00—Heterocyclic compounds containing five-membered rings having two nitrogen atoms and one oxygen atom as the only ring hetero atoms
- C07D271/02—Heterocyclic compounds containing five-membered rings having two nitrogen atoms and one oxygen atom as the only ring hetero atoms not condensed with other rings
- C07D271/06—1,2,4-Oxadiazoles; Hydrogenated 1,2,4-oxadiazoles
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
DEUTSCHESGERMAN
Es wurde gefunden, daß man zu einer Gruppe neuer und therapeutisch wertvoller 1,2,4-Oxadiazole der allgemeinen FormelIt has been found that a group of new and therapeutically valuable 1,2,4-oxadiazoles of the general formula
Verfahren zur Herstellung
neuer 1,2,4-OxadiazoleMethod of manufacture
new 1,2,4-oxadiazoles
R-CfR-Cf
,N—O, N-O
^N=C- (C H2)M—N(A)2 ^ N = C- (CH 2 ) M -N (A) 2
(I)(I)
gelangt, in der R ein gegebenenfalls substituierter Arylrest, η gleich 1, 2 oder 3 ist und in welcher (A)2 gleiche oder verschiedene Alkylreste darstellt, die beide gemeinsam einen gegebenenfalls durch weitere Heteroatome unterbrochenen Ring bilden können, wenn man Amidoximderivate der allgemeinen Formelarrives, in which R is an optionally substituted aryl radical, η is 1, 2 or 3 and in which (A) 2 represents identical or different alkyl radicals, both of which can together form a ring optionally interrupted by further heteroatoms, if amidoxime derivatives of the general formula
Anmelder:
Fa. Angelini Francesco, RomApplicant:
Angelini Francesco, Rome
Vertreter: Dr. G. W. LotterhosRepresentative: Dr. G. W. Lotterhos
und Dr.-Ing. H. W. Lotterhos, Patentanwälte,and Dr.-Ing. H. W. Lotterhos, patent attorneys,
Frankfurt/M., Lichtensteinstr. 3Frankfurt / M., Lichtensteinstr. 3
. N O C O (C H2) „ — Halogen. NOCO (CH 2 ) "- halogen
"NH,"NH,
(Π)(Π)
in der R und η die obige Bedeutung haben, mit sekundären Aminen der Formel HN(A)2 umsetzt und die Oxadiazole isoliert.in which R and η have the above meaning, reacts with secondary amines of the formula HN (A) 2 and isolates the oxadiazoles.
Geeignete Amidoxime sind z. B. solche, in denen R ein Phenylrest, ein p-Chlorphenylrest oder ein Naphthylrest ist und in denen A2 die — (CH3)2- oder — (C2H5)2-Gruppe darstellt oder auch gemeinsam mit dem Stickstoffatom, z.B.Suitable amidoximes are, for. B. those in which R is a phenyl radical, a p-chlorophenyl radical or a naphthyl radical and in which A 2 represents the - (CH 3 ) 2 or - (C 2 H 5 ) 2 group or together with the nitrogen atom, e.g.
,CH9 — CH,, CH 9 - CH,
— N- N
werden am besten in der Weise hergestellt, daß man das Amidoximare best prepared in such a way that the amidoxime
.NOH.NOH
-CHo-CHo
CH2 — CH2 CH 2 - CH 2
— C H.- C H.
2\2 \
— N- N
CH2 — CH2 CH 2 - CH 2
,CH2 — CH2x , CH 2 - CH 2x
1NH, 1 NH,
N-CHS N-CH S
g ·— C H2
Die als Ausgangssubstanz dienenden Amidoximderivate in der Kälte in Gegenwart eines inerten Lösungsmittels
mit einem 2 bis 4 C-Atome besitzenden co-Halogencarbonsäurehalogenid
zur Reaktion bringt.g · - CH 2
The amidoxime derivatives serving as the starting substance are reacted in the cold in the presence of an inert solvent with a co-halocarboxylic acid halide containing 2 to 4 carbon atoms.
Die nach dem Verfahren der Erfindung herstellbaren Verbindungen zeigen z. B. eine aspezifische antispasmodische Wirkung auf die glatte Muskulatur des Dünndarmes, wenn er in vitro mittels Acetylcholin, Histamin, Bariumchlorid und l,l-Dimethyl-4-phenyl-piperaziniumiodid gereizt wird. So zeigt z. B. das 3-Phenyl-5-diäthylarninoäthyl-l,2,4-oxadiazol, das S-p-Chlorphenyl-S-pyrroHdino-propyl-l,2,4-oxadiazol und das 3-p-Chlorphenyl-4-diäthylaminoäthyl-l,2,4-oxadiazol eine dem Papaverin überlegene Wirkung. Ferner sei die anästhetische Wirkung hervorgehoben. So zeigen z. B. das 3-p-Chlorphenyl-5-morpholino-propyl-l,2,4-oxadiazol sowie das 3-Phenyl-5-diäthylaminomethyl-l,2,4-oxadiazol auf die Hornhaut des Kaninchens bereits in einer Konzentration von 0,5 °/0 eine sehr gute anästhetische Wirkung. Bei Verwendung der zuletzt genannten Verbindungen in der angegebenen Konzentration wird der Hornhautreiz vollkommen aufgehoben. Es sei auch auf die bei kleinen Dosen beim Mäusetest auftretende sedative Wirkung hingewiesen.The compounds which can be prepared by the process of the invention show e.g. B. an asspecific antispasmodic effect on the smooth muscles of the small intestine when it is stimulated in vitro by means of acetylcholine, histamine, barium chloride and l, l-dimethyl-4-phenyl-piperazinium iodide. So shows z. B. 3-phenyl-5-diethylarninoethyl-l, 2,4-oxadiazole, Sp-chlorophenyl-S-pyrroHdino-propyl-l, 2,4-oxadiazole and 3-p-chlorophenyl-4-diethylaminoethyl-l , 2,4-oxadiazole has an effect superior to papaverine. The anesthetic effect should also be emphasized. So show z. B. 3-p-chlorophenyl-5-morpholino-propyl-l, 2,4-oxadiazole and 3-phenyl-5-diethylaminomethyl-l, 2,4-oxadiazole on the rabbit cornea in a concentration of 0 5 ° / 0 a very good anesthetic effect. When using the last-mentioned compounds in the specified concentration, the corneal irritation is completely eliminated. Attention should also be drawn to the sedative effect that occurs with small doses in the mouse test.
Ferner wurde festgestellt, daß insbesondere das 3-Phenyl-5-dimethylaminoäthyl-l,2,4-oxadiazol und das 3-Phenyl-5-diäthylamino-l,2,4-oxadiazol eine starke, den Hustenreiz hemmende Wirkung hat, die analog der des Codeins ist (2mg/kgintraperitonal). Das zuletzt genannteIt was also found that in particular 3-phenyl-5-dimethylaminoethyl-1,2,4-oxadiazole and the 3-phenyl-5-diethylamino-l, 2,4-oxadiazole has a strong, throat-inhibiting effect, which is analogous to that of the Codeine is (2mg / kg intraperitoneally). The latter
109 507/493109 507/493
1,2,4-Oxadiazol verhindert lijjai:'" den Husten der Katze, der durch elektrische Reizung hervorgerufen wurde. Führt man den Test nach L. 0. Randall und J. J. Selitto mit der Ratte durch (vgl. Arch. Int. Pharmacodin., 1957, 111, S. 4Q9), so zeigt sich z. B. das 3-Phenyl-5-diäthylaminoäthyl-l,2,4-oxädiazol ebenso ahalgetisch " wirksam wie das Codein. Insbesondere übt die genannte Verbindung eine der Acetylsalicylsäure vergleichbare, entzündungshemmende Wirkung aus,: die sich bei dem durch Injektion von Bierhefe hervorgerufenem Rattenödem unter Beweis stellen ließ.1,2,4-Oxadiazole prevents lijjai: '"the cough of the cat, which was caused by electrical irritation. If the test according to L. 0. Randall and JJ Selitto is carried out with the rat (cf. Arch. Int. Pharmacodin. , 1957, 111, p. 4Q9), 3-phenyl-5-diethylaminoethyl-1,2,4-oxadiazole, for example, is just as effective as codeine. In particular, the compound mentioned exerts an anti-inflammatory effect comparable to that of acetylsalicylic acid : which was demonstrated in the rat edema caused by the injection of brewer's yeast.
1. Zu einer Lösung von 40 g Benzamidoxim in 450 cm3 wasserfreiem Äther gibt man tropfenweise und unter Rühren und äußerer Eiskühlung eine Lösung, die 18,7 g /S-Chlorpropionylchlorid in 50 cm3 wasserfreiem Äther enthält. Man erhält einen dicken Niederschlag, rührt noch= 1I2 Stunde bei Raumtemperatur und filtriert sodann. Der Niederschlag wird gründlich mit Wasser gewaschen, um das Chlorhydrat des Benzamidoxims zu entfernen, während das Chloropropionyl-benzamidoxim ungelöst bleibt. Es wird im Exsikkator über P2O5 getrocknet. Die Ausbeute an dem praktisch reinen Produkt, das bei 98 und 99°C schmilzt, beträgt 94% der Theorie. Eine Lösung von 9,2 g Diäthylamin in 50 cm3 wasserfreiem Benzol wird tropfenweise unter Rühren und Kühlen zu einer Suspension aus 13 g Chloropropionyl-benzamidoxim in 50 cm3 wasserfreiem Benzol gegeben. Man erwärmt noch etwa 2 Stunden, kühlt ab und wäscht zweimal mit 10 cm3 Wasser. Man trocknet den Niederschlag über CaCl2 und destilliert das Lösungsmittel ab. Das 3-Phenyl-5-/?-diäthylaminoäthyl-l,2,4-oxadiazol geht bei 0,4 mm bei 127° C über. Ausbeute 10,5 g.1. A solution containing 18.7 g / S-chloropropionyl chloride in 50 cm 3 of anhydrous ether is added dropwise to a solution of 40 g of benzamidoxime in 450 cm 3 of anhydrous ether, with stirring and external ice cooling. A thick precipitate is obtained, stirred for a further 1 l for 2 hours at room temperature and then filtered. The precipitate is washed thoroughly with water in order to remove the hydrochloride of the benzamidoxime, while the chloropropionylbenzamidoxime remains undissolved. It is dried over P 2 O 5 in a desiccator. The yield of the practically pure product, which melts at 98 ° and 99 ° C., is 94% of theory. A solution of 9.2 g of diethylamine in 50 cm 3 of anhydrous benzene is added dropwise with stirring and cooling to a suspension of 13 g of chloropropionylbenzamidoxime in 50 cm 3 of anhydrous benzene. The mixture is heated for about 2 hours, cooled and washed twice with 10 cm 3 of water. The precipitate is dried over CaCl 2 and the solvent is distilled off. The 3-phenyl-5 - /? - diethylaminoethyl-1,2,4-oxadiazole passes over at 0.4 mm at 127 ° C. Yield 10.5g.
2. Man suspendiert 0,1 Mol Benzamidoxim in 200 cm3 wasserfreiem Äther, rührt unter Eiskühlen energisch und gibt eine Lösung von 0,05 Mol ω-Chlorbutyrylchlorid in 20 cm3 Äther hinzu. Man rührt noch 1Z2 Stunde bei Raumtemperatur und filtriert von dem dicken Niederschlag ab. Man wäscht den Niederschlag einigemal mit Wasser, um das Chlorhydrat des Benzamidoxims zu entfernen, und trocknet im Vakuumexsikkator über P2O5. Ausbeute 92%. Schmelzpunkt 106 bis 107° C.2. 0.1 mol of benzamidoxime is suspended in 200 cm 3 of anhydrous ether, stirred vigorously with ice cooling and a solution of 0.05 mol of ω-chlorobutyryl chloride in 20 cm 3 of ether is added. The mixture is stirred for a further 1 Z 2 hours at room temperature and the thick precipitate is filtered off. The precipitate is washed several times with water in order to remove the hydrochloride of the benzamidoxime and dried in a vacuum desiccator over P 2 O 5 . Yield 92%. Melting point 106 to 107 ° C.
Bei 130° C werden 10 g oj-Chlorobutyryl-benzamidoxim, 9,1 g Diäthylamin in 40 cm3 Toluol 16 Stunden lang im geschlossenen Rohr erhitzt. Hierbei bilden sich Kristalle des Diäthylamino-chlorhydrats. Man säuert den gesamten Inhalt des Rohres mit verdünnter Salzsäure an und behandelt alsdann die wäßrige Lösung mit festem K2CO3. Sodann extrahiert man mit Äther das sich abscheidende Öl, trocknet mit Na2SO4, entfernt das Lösungsmittel und destilliert bei vermindertem Druck. Das S-Phenyl-S-S-diäthylamiaopropyl-l^^-oxadiazol siedet bei 0,1 mm bei 136° C. Ausbeute 7,3 g.At 130 ° C., 10 g of oj-chlorobutyryl-benzamidoxime, 9.1 g of diethylamine in 40 cm 3 of toluene are heated in a closed tube for 16 hours. Crystals of diethylamino-chlorohydrate are formed during this process. The entire contents of the tube are acidified with dilute hydrochloric acid and the aqueous solution is then treated with solid K 2 CO 3 . The oil which separates out is then extracted with ether, dried with Na 2 SO 4 , the solvent is removed and the mixture is distilled under reduced pressure. The S-phenyl-SS-diethylamiaopropyl-l ^^ - oxadiazole boils at 0.1 mm at 136 ° C. Yield 7.3 g.
Es wurden noch folgende, aus den nachfolgenden Tabellen ersichtlichen Verbindungen hergestellt:The following connections, which can be seen in the following tables, were also established:
Allgemeine Formel A Ji—OGeneral formula A Ji-O
N=C-CH2RN = C-CH 2 R
Fp. des Chlorhydrats
168° CKp. 0 .05 115 ° C
Mp. Of the hydrochloride
168 ° C
gefunden Cl-Ionen
berechnet Cl-IonenC 13 H 18 ClN 3 O
found Cl ions
calculates Cl ions
13,2413.15
13.24
berechnet Cl-Ionenfound Cl ions
calculates Cl ions
21,4121.46
21.41
berechnet Cl-Ionenfound Cl ions
calculates Cl ions
13,9713.74
13.97
Fp. des ChlorhydratsBp 0> 1 128 ° C
Mp. Of the hydrochloride
gefunden Cl 12,49
berechnet Cl 12,58C 13 H 16 ClN 3 O
found Cl 12.49
calculated Cl 12.58
Fp. des Chlorhydrats B.p. 0.18 137 ° C
Mp. Of the hydrochloride
gefunden Cl-Ionen
berechnet Cl-IonenC 13 H 17 Cl 2 N 3 O
found Cl ions
calculates Cl ions
11,7311.81
11.73
Fp. des ChlorhydratsB.p. 0> 3141 ° C; M.p. 42
Mp. Of the hydrochloride
235until
235
bis 236° C44 ° C
up to 236 ° C
gefunden Cl-Ionen
berechnet Cl-IonenC 13 H 15 Cl 2 N 3 O
found Cl ions
calculates Cl ions
11,8111.85
11.81
ι Ü97ι Ü97
Allgemeine Formel BGeneral formula B
JJ QJJ Q
N=C-CH2CH2RN = C-CH 2 CH 2 R
Fp. des Chlorhydrats 153 bis 154°
Fp. des Jodmethylats 112 bis 114°Kp. 0, 5, 130 ° C
Mp. Of the chlorohydrate 153 to 154 °
Mp. Of the iodine methylate 112 ° to 114 °
CC.
C.
gefundenC 14 H 19 N 3 O
found
N 17,10C 68.23, H.
N 17.10
.CH2 CH 2
.CH 2
K. = J.N ^2Xl5J2 T? \ T / r πι
K. = JN ^ 2 Xl 5 J 2
N 17,13calculated C 68.54, H
N 17.13
Cl-IonenCl ions
Cl ions
berechnetfound
calculated
Cl-IonenCl ions
Cl ions
13,9713.97
13.97
berechnetfound
calculated
Cl-IonenCl ions
Cl ions
11,9912.25
11.99
berechnetfound
calculated
Cl' 12,65Cl '12.81
Cl '12.65
20,5420.50
20.54
berechnetfound
calculated
Cl-IonenCl ions
Cl ions
berechnetfound
calculated
Cl-IonenCl ions
Cl ions
11,2111.04
11.21
berechnetfound
calculated
10,7411.07
10.74
X;X;
Allgemeine Formel C
.N OGeneral formula C
.NO
>—c{> —C {
/ C H2 — C H2.R = N (C 2 H 5 ),
/ CH 2 - CH 2 .
Fp. des ChlorhydratsBp 0.1 136 ° C
Mp. Of the hydrochloride
gefunden
berechnetC 15 H 21 N 3 O
found
calculated
C 69,36,C 69.39,
C 69.36,
H 8,01H 8.17
H 8.01
PTT PTT
\s JnLg V^ -Ei2
/ C H2 — C H2.R = N (^ ^ O
PTT PTT
\ s JnLg V ^ -Ei 2
/ CH 2 - CH 2 .
Fp. des ChlorhydratsBp Oil 163 ° C
Mp. Of the hydrochloride
gefunden
berechnetC 15 H 19 N 3 O 2
found
calculated
C 65,91,C 65.76,
C 65.91,
H 7,01H 6.86
H 7.01
CH2 — CH2 K = JN. / CH 2
CH 2 - CH 2
Fp. des ChlorhydratsB.p. 0> 1 152 ° C
Mp. Of the hydrochloride
gefunden
berechnetC 16 H 21 N 3 O
found
calculated
C 70,82,C 70.86,
C 70.82,
H 7,80H 7.79
H 7.80
Fp. des Chlorhydrats B.p. 0i2 142 ° C
Mp. Of the hydrochloride
gefunden
berechnetC 16 H 21 Cl 2 N 3
found
calculated
G-Ionen
Cl-IonenO
G ions
Cl ions
10,7310.91
10.73
Fortsetzung der TabelleContinuation of the table
X=Cl R =X = Cl R =
,CH2 — 2 , CH 2 - 2
C Hg -— C H2 , CHo,— CH2 C Hg - C H2 , CHo, - CH 2
CH2 ~~— CH2 , CHo — CHo v CH 2 ~~ - CH 2 , CHo - CHo v
:o:O
C=Cl R = NC = Cl R = N
CH2-CH2' CH2-—CH2 CH 2 -CH 2 'CH 2 -CH 2
- CHo- CHo
3-/^Naphthyl-5-/?-diäthylanmoäthyl-1,2,4^ oxadiazol-chlorhydrat3 - / ^ Naphthyl-5 - /? - diethylanmoäthyl-1,2,4 ^ oxadiazole chlorohydrate
a-Naphthyl-5-pvrroUdinopropyl-1,2,4-oxadiazol-chlorhydrat Kp.0,3 170° Ca-naphthyl-5-pvrroUdinopropyl-1,2,4-oxadiazol-chlorohydrate Kp. 0, 3 170 ° C
Fp. des Chlorhydrats 202 bis 204° CMp of the chlorohydrate 202-204 ° C
Kp.0)3 160° C/Bp. 0) 3 160 ° C /
Fp. des Chlorhydrats 188 bis 189° CMp. Of the hydrochloride 188-189 ° C
Kp.Oi4 180° C; Fp. 37 bis 39° C
Fp. des Chlorhydrats 252 bis 254° C B.p. Oi4 180 ° C; Mp 37-39 ° C
Mp. Of the hydrochloride 252 to 254 ° C
Kp.0,e 152° CB.p. 0 , e 152 ° C
Fp. des Chlorhydrats 140 bis 141,5° CMp. Of the chlorohydrate 140 to 141.5 ° C
Fp. 146 bis 148° CMp 146-148 ° C
Fp. 116 bis 117° CMp 116-117 ° C
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA32952A DE1097998B (en) | 1959-09-29 | 1959-09-30 | Process for the production of new 1, 2, 4-oxadiazoles |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT703759A AT212830B (en) | 1959-09-29 | 1959-09-29 | Process for the preparation of new 1,2,4-oxdiazoles |
DEA32952A DE1097998B (en) | 1959-09-29 | 1959-09-30 | Process for the production of new 1, 2, 4-oxadiazoles |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1097998B true DE1097998B (en) | 1961-01-26 |
Family
ID=25603512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA32952A Pending DE1097998B (en) | 1959-09-29 | 1959-09-30 | Process for the production of new 1, 2, 4-oxadiazoles |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1097998B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1213840B (en) * | 1962-03-26 | 1966-04-07 | Acraf | Process for the preparation of 1, 2, 4-oxadiazoles and their salts |
US3251840A (en) * | 1961-06-17 | 1966-05-17 | Acraf | 3-sulfamyl phenyl-5-aminoalkyl-1, 2, 4-oxadiazoles |
DE1545658A1 (en) * | 1964-03-02 | 1972-01-20 | Chinoin Gyogyszer Es Vegyeszet | Process for the preparation of oxadiazole derivatives |
WO2005108382A1 (en) * | 2004-05-04 | 2005-11-17 | Merck & Co., Inc. | 1,2,4-oxadiazole derivatives as dipeptidyl peptidase-iv inhibitors for the treatment or prevention of diabetes |
-
1959
- 1959-09-30 DE DEA32952A patent/DE1097998B/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3251840A (en) * | 1961-06-17 | 1966-05-17 | Acraf | 3-sulfamyl phenyl-5-aminoalkyl-1, 2, 4-oxadiazoles |
DE1213840B (en) * | 1962-03-26 | 1966-04-07 | Acraf | Process for the preparation of 1, 2, 4-oxadiazoles and their salts |
DE1545658A1 (en) * | 1964-03-02 | 1972-01-20 | Chinoin Gyogyszer Es Vegyeszet | Process for the preparation of oxadiazole derivatives |
WO2005108382A1 (en) * | 2004-05-04 | 2005-11-17 | Merck & Co., Inc. | 1,2,4-oxadiazole derivatives as dipeptidyl peptidase-iv inhibitors for the treatment or prevention of diabetes |
US7687492B2 (en) | 2004-05-04 | 2010-03-30 | Merck Sharp & Dohme Corp. | 1,2,4-Oxadiazole derivatives as dipeptidyl peptidase-IV inhibitors for the treatment or prevention of diabetes |
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