Method for synthesizing ursodeoxycholic acid by taking BA as raw material

A technology of ursodeoxycholic acid and raw materials, applied in the synthesis of ursodeoxycholic acid, in the field of synthetic ursodeoxycholic acid, can solve the problems of expensive raw materials, cumbersome steps, large pollution, etc., and achieve simple post-processing and low price , low cost effect

Active Publication Date: 2020-04-28
JIANGSU JIAERKE PHARMA GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] The reported ursodeoxycholic acid synthesis route not only has problems such as too complicated steps, low yield, high pollution, and expensive raw materials, but the existing ursodeoxycholic acid synthesis route reported above all uses animal bile acids ( Cattle, sheep cholic acid, chenodeoxycholic acid, ursolic acid, hyodeoxycholic acid, hyodeoxycholic acid) as starting

Method used

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  • Method for synthesizing ursodeoxycholic acid by taking BA as raw material
  • Method for synthesizing ursodeoxycholic acid by taking BA as raw material
  • Method for synthesizing ursodeoxycholic acid by taking BA as raw material

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Experimental program
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Effect test

Embodiment 1

[0117] The preparation of embodiment one formula (2) compound

[0118] Add BA (10.0g, 30.26mmol), p-toluenesulfonic acid (57mg, 0.30mmol), ethylene glycol (16.8mL, 302.60mmol), and triethyl orthoformate (15.1mL, 90.78mmol) in sequence in a 250mL single-necked flask And 150mL tetrahydrofuran, react at room temperature for 8h. After the reaction was completed, concentrate under reduced pressure, add 100 mL of water, extract with ethyl acetate (60 mL×3), wash with water (50 mL×2), wash with saturated sodium chloride solution (50 mL), dry over anhydrous sodium sulfate, concentrate under reduced pressure, and Purified by column chromatography (PE / EA=3 / 1, v / v), the compound of formula (2) (5.0 g, white solid) was obtained with a molar yield of 44%.

[0119] BA (10.0g, 30.26mmol), p-toluenesulfonic acid (57mg, 0.30mmol), ethylene glycol (16.8mL, 302.60mmol) and 300mL benzene were successively added into a 250mL single-necked flask, and the reaction was carried out under reflux and w...

Embodiment 2

[0121] The preparation of embodiment two formula (3) compound

[0122] The compound of formula (2) (5.0 g, 13.35 mmol), IBX (7.5 g, 26.70 mmol), 50 mL THF and 50 mL DMSO were successively added into a 250 mL one-necked flask, and reacted at room temperature for 5 h. After the reaction was detected by TLC, add water, filter with suction, extract with dichloromethane (50mL×3), wash with water (50mL×2), wash with saturated sodium bicarbonate solution (50mL), dry over anhydrous sodium sulfate, concentrate under reduced pressure, and Purified by column chromatography (PE / EA=3 / 1, v / v), the compound of formula (3) (4.9 g, white solid) was obtained with a molar yield of 98%.

[0123] Add formula (2) compound (10.1g, 26.96mmol), TEMPO (42mg, 0.27mmol), 100mL dichloromethane, sodium bicarbonate (3.1g, 36.40mmol) and tetrabutylammonium bromide successively in 500mL one-necked flask (870mg, 2.70mmol) in water (40mL), NCS (4.1g, 31.00mmol), react at 0°C for 5h. After the reaction was det...

Embodiment 3

[0125] The preparation of embodiment three formula (6) compound

[0126] The compound of formula (3) (1.0 g, 2.68 mmol), methoxyformylmethylene triphenylphosphine (1.7 g, 5.36 mmol) and 15 mL of toluene were successively added into a 100 mL one-necked flask, and the reaction was refluxed for 4 h. TLC detected that the reaction was complete, concentrated under reduced pressure, and purified by silica gel column chromatography (PE / EA=3 / 1, v / v) to obtain the compound of formula (6) (1.13 g, white solid), with a molar yield of 98%.

[0127] Sodium hydride (161mg, 4.02mmol) and 10mL tetrahydrofuran were added in a 100mL single-necked flask, and after stirring for 15min, trimethyl phosphonoacetate (0.65mL, 4.02mmol), compound of formula (3) (1.0g, 2.68mmol), 0 Reaction at ℃ for 4h. TLC detected that the reaction was complete, concentrated under reduced pressure, and purified by silica gel column chromatography (PE / EA=3 / 1, v / v) to obtain the compound of formula (6) (1.12 g, white so...

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PUM

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Abstract

The invention discloses a synthesis method of ursodeoxycholic acid, and the method comprises the following steps: by using a botanical compound BA as a raw material, carrying out ethylene glycol protection, oxidation, side chain extension reaction, ethylene glycol removal protection, reduction, hydrolysis and the like to synthesize the ursodeoxycholic acid. Raw materials for synthesizing the ursodeoxycholic acid are cheap and easy to obtain, synthesis steps are easy and convenient to operate, the yield is high, environmental friendliness is achieved, and industrial production is facilitated.

Description

technical field [0001] The invention belongs to the technical field of organic chemical synthesis / pharmaceutical synthesis, and relates to a method for synthesizing ursodeoxycholic acid, in particular to a 21-hydroxy-20-methylpregn-4-en-3-one (BA) A method for synthesizing ursodeoxycholic acid as a raw material. Background technique [0002] Ursodeoxycholic acid (Ursodeoxycholic acid, UDCA) (as shown in formula 1), chemical name 3α, 7β-dihydroxy-5β-cholestane-24-acid (3α, 7β-dihydroxy-5β-cholan-24- oic acid), CAS No. 128-13-2, molecular formula C 24 h 40 o 4 , molecular weight 392.56, white powder, odorless, bitter taste, melting point 203-204 ℃. Ursodeoxycholic acid is the main ingredient contained in the precious traditional Chinese medicine bear bile. It is the first-line treatment drug for primary biliary cirrhosis (PBC) approved by the US FDA. It can also effectively treat gallstone diseases and chronic liver diseases in clinical practice. , has broad market prospe...

Claims

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Application Information

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IPC IPC(8): C07J9/00C07J21/00
CPCC07J9/005C07J21/006C07J9/00
Inventor 仇文卫王杰
Owner JIANGSU JIAERKE PHARMA GRP CORP
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