Method of producing cis-,endo-2-azabicyclo-(3,3,0)-octane-3-carboxylic acid or esters,or acid-additi

专利摘要:
The invention relates to substituted heterocyclic azabicycloo-octanecarboxylic acids, in particular compounds of the general formula 1 — W – C (−I) –CHg KO {0) C – CHg | / "G CHg-C () - CH2 of chloro-2-acetylaminopropionic acid or 2-ethyl-acylaminoacrylic acid methyl ester in dimethylformamide, followed by cyclization of the resulting product under the action of a strong acid. Next, the reduction is carried out on a platinum catalyst in ethyl acetate. Isolation is carried out in free form or in the form of acid-additive. salt. In the case when R-H is esterified with the appropriate alcohol in dioxane medium in the presence of an acidic catalyst.
公开号:SU1277895A3
申请号:SU833679915
申请日:1983-12-22
公开日:1986-12-15
发明作者:Теец Фолькер；Гайгер Рольф；Урбах Хансйорг；Беккер Райнхард；Шелькенс Бернвард
申请人:Хехст Аг (Фирма)；
IPC主号:

专利说明:

1127
The invention relates to the preparation of a bottom, eido-2-azabicyclo (3.3.0) octane-3-cbboic acid of the general formula:
h and
N
WO, C
or
n n
N-f
 GL
n
N is hydrogen;
H
g de
C - C - alkyl, benzyl,
)
or its esters, or acid addition salts, which are intermediate products in the synthesis of endot-azabicyclo- (3,3,0) -octanecarboxylic acid derivatives, which have a blood pressure lowering effect.
The aim of the invention is to develop, on the basis of known methods, a method for producing new compounds, which are intermediate products in the synthesis of substances possessing valuable pharmacological properties.
Example 1.1 Acetylamino-3- (2-oxocyclopentyl) methyl ester 2 - propionic acid.
269 g of 3-chloro-2-acetyl-amino-propionic acid methyl ester and 257 g of 1-pyrrolidino-cyclopeitene in 1.5 l of dimethylformamide are kept at room temperature for 24 hours. Then evaporated in vacuo, added to a small amount of water by adding concentrated hydrochloric acid, the pH of the medium is adjusted to 2 and extracted 2 times with 4 L portions of ethyl acetate. When the organic phase is evaporated, a light yellow oil remains. Exit 290 g.
IMP data: 2.02 (s., 3N); 3.74 (s., 3N); 4.4-4.8 (t., IH / CD C1)
Calculated,%: C 58.1; H 7.54; N 6.16.
Found,%: C 58.5; H 7.2; N 6.5 II. Cis chloride, endo-2-azabicyclo- (3,3,0) - octane-3-carboxylic acid.
27O g obtained in a similar manner to 1 acetylamine derivative 1.5l 3 n. hydrochloric acid is boiled for 45 minutes at TBMtiepaType boiling. It is evaporated in vacuo, the residue is added to ethyl acetate, mixed with 5 g of platinum on activated carbon (10% Pt) and hydrogenated at a pressure of 5 bar. After filtration, the residue is evaporated.
Tallized from chloroform / diisopropyl ether. T 205-209 С, yield 1 50 g.
111. Benzyl Chloride
cis, endo-2-azabiaryl (3, 3,0) -octane-3-carboxylic acid esters.
A drop of the acid obtained in a similar manner to 11 kb 6oHO} joA is added to a mixture of 390 g of benzyl alcohol and 65 g of thionyl chloride cooled by water from a house and kept at room temperature for 2 hours. After evaporation in a vacuum, 47 g of benzyl ether from a mixture
chloroform / isopropanol. T 74 ° C (acid chloride). PRI me R 2.
1. Cis-endo-azabicyclo- (3,3,0) -octane-3-carboxylic acid tert-butyl ester.
25 g of azabicyclo-(3,3,0) -octanecarboxylic acid chloride in 250 ml of dnoxane are reacted with 250 ml of isobutapene and 25 ml of concentrated sulfuric acid. After 14 hours at room temperature, sodium hydroxide is made alkaline, the mixture is evaporated in vacuo, mixed with 100 ml of water and the ether is removed. After evaporation of the ester, 15 g of instant oil is obtained.
Calculated,%: C 68.2; H 10.2; N 6.63. (,
Found,%: C 67.9; H 10.1; N 6.3.
PRI me R 3. Cis-endo-2-azabicynclo- (3,3,0) -octane-3-ester of carboxylic acid ethyl ester. Connection receive similar
Example 1 (ill), but benzyl alcohol is replaced by ethanol. Yield 80%. The resulting hydrochloride is dissolved, in water, alkalinized with a saturated solution of K C0: j and the ester is extracted with methylene chloride. After drying with sulfate, max is sucked off and concentrated. The remaining liquid is the indicated compound. T, "(0.07 mm Hg).
PRI me R 4. Cis-endo-2-azabicyclic- (H, 3.0) -octane of 3-carboxylic acid 11 g of 2-acetylamino-methyl ester of acrylic acid and 13 g of cyclopentenopyrrolidine are held at reaction temperature 24 h in 500 ml of dimethylformamide. Next, the process is carried out analogously to example 1 (1 and 11). Output 10 g. T „, 205-209 C.
3127

权利要求:
Claims (1)
[1]
11 The invention relates to the production of a day, eido-2-azabicyclo {3,3,0) - octane of 3-succinic acid of the general formula: n H and CH WO, C N - hydrogen; C-C is alkyl, benzyl, or its esters, or acid addition salts, which are intermediates in the synthesis of derivatives of pi endo-azabicyclo (3.3.0) -octanecarboxylic acids, which have a blood pressure lowering action. The aim of the invention is to develop, on the basis of known methods, a method of producing new compounds, which are intermediate products in the synthesis of substances possessing valuable pharmacological properties. Example 1.1 Acetylamino-3- (2-oxocyclopentyl} propionic acid methyl ester. 269 g of 3-chloro-2-acetyl-amino-propionic acid methyl ester and 257 g of 1-pyrrolidino-cyclopeitene in 1.5 l of dimethylformamide are kept at room temperature for 24 hours The residue is then evaporated in vacuo, the residue is taken up in a small amount of water, the medium is adjusted to pH 2 with concentrated hydrochloric acid and extracted 2 times in 4 l portions of ethyl acetate. The light yellow oil evaporates the organic phase. The yield is 290 g IMP data: 2.02 (s., 3N); 3.74 (s., 3N); 4.4–4.8 (t, iH / CD C1) Calculated,%: C 58.1; H 7.54; N 6.16. Found,%: C 58.5; H 7.2; N 6.5 II. Cis chloride, endo-2 azabicyclo ( 3,3,0) - octane-3-carboxylic acid. 27O g of the derivative obtained in a similar manner to 1 acetylamine in 1.5 liters of 3N hydrochloric acid is boiled for 45 minutes at a TBMtiepaType of boiling. The residue is evaporated in a vacuum. The ethyl acetate is mixed with 5 g of platinum on activated carbon (10% Pt) and hydrogenated at a pressure of 5 bar. After filtration, the residue is crystallized and the residue is crystallized from chloroform / diisoropyl ether. T 205-209С, yield 1 50 g. 111. Cis benzyl ester chloride, endo-2-azabiyl-3,3,0-octane-3-carboxylic acid. A drop of the acid obtained in a similar manner to 11 ka6oHO} joA is added to a mixture of 390 g of benzyl alcohol and 65 g of thionyl chloride cooled by water from a house and kept at room temperature for 2 hours. After evaporation in vacuo, 47 g of benzene ester crystallize from chloroform / isopropanol mixtures. T 74 ° C (acid chloride). PRI mme R 2. 1. Tert-butyl ester of cis-endoazabicyclo- (3,3,0) -octane-3-carboxylic acid. 25 g of azabicyclo (3,3,0) -octanecarboxylic acid chloride in 250 ml of dnoxane are reacted with 250 ml of isobutapene and 25 ml of concentrated sulfuric acid. After 14 hours at room temperature, sodium hydroxide is made alkaline, the mixture is evaporated in vacuo, mixed with 100 ml of water and the ether is removed. After evaporation of the ester, 15 g of instant oil is obtained. Calculated,%: C 68.2; H 10.2; N 6.63. (, Found,%: C 67.9; H 10.1; N 6.3. PRI me R 3. Cys-endo-2-azabitsnklo- (3,3,0) -octane-3-complex ethyl carboxylic ester. The compound was prepared analogously to Example 1 (ill), but the benzyl alcohol was replaced by ethanol. Yield 80%. The resulting hydrochloride was dissolved in water, basified with a saturated solution of K C0: j and the complex ester was extracted with methylene chloride. After drying with sulphate of mahni is filtered off with suction and concentrated. The remaining liquid is the indicated compound. T, n (0.07 mm Hg). EXAMPLE 4 Cis-Endo-2-azabicyclo- (H, 3.0 ) octane 3-carboxylic acid 11 g of 2-acetylamino-complex methylated ester of acrylic acid and 13 g of cyclopentenopyrrolidine are kept at a reaction temperature of 24 h in 500 ml of dimethylformamide.Further, the process is carried out analogously to Example 1 (1 and 11). Yield 10 g T „, 205-209 C. 312 The invention The method of obtaining} c cis, endo-2-azabicyclo- (3,3,0) -octane-3-carboxylic acid of the general formula OC-C- / H. COOCH (-1H-COCH3) t-cn-sn ZN-SOSN7
where W is hydrogen;
 - alkyl, benzyl, or its esters, or acid additive salts, conclude; iis that 1-pyrrolidino-cyclopentene of the formula
is reacted with 3-chloro-2-acetyl-aminopropionic acid methyl ester of the formula
SOOSNz
C1-CH2-CH
1YAN-SOCNz
or with methyl 2-acetyl-amio-acrylic acid of formula
cyclized with a strong acid to the compound of formula
(TUSUO; / PGUSOON -J JL
 H
which is subjected to catalytic hydrogenation on a platinum catalyst, and the desired product is obtained in free form or as an acid addition salt, or, if necessary, is esterified. Priority featured:
05.11.81 when W is hydrogen, tert-butyl or benzyl;
07/17/82 when using W-ethyl.

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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DE3143946|1981-11-05|

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DE19823226768|DE3226768A1|1981-11-05|1982-07-17|DERIVATIVES OF CIS, ENDO-2-AZABICYCLO--OCTAN-3-CARBONIC ACID, METHOD FOR THE PRODUCTION THEREOF, THE MEANS CONTAINING THEM AND THE USE THEREOF|

---