Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Podophyllotoxin compounds and their application and preparation process

A compound, methyl technology, applied in the field of new podophyllotoxins, can solve the problems of poor water solubility, strong drug resistance, and poor oral effect.

Inactive Publication Date: 2005-11-23
LANZHOU UNIVERSITY
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tests have shown that podophyllotoxin drugs such as VP-16 have an effect on many tumor cells such as small cell lung cancer, non-Hodget's disease, acute monocytic leukemia, progressive monocytic leukemia, breast cancer, bladder cancer, and testicular cancer. Good therapeutic effect, but there are shortcomings such as strong drug resistance, poor water solubility, severe myelosuppression, and poor oral effect. It is still an important task to find new podophyllum analogues with good antitumor activity and small toxic and side effects. a hot spot in the world

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Podophyllotoxin compounds and their application and preparation process
  • Podophyllotoxin compounds and their application and preparation process
  • Podophyllotoxin compounds and their application and preparation process

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The preparation method of the compound of the present invention and the activity test results of the corresponding products are provided below

[0017] The preparation method of the present invention is: dissolving podophyllotoxin and N-(1-oxyl-2,2,6,6-tetramethyl-oxygen-carbonyl)-L-amino acid in dry dichloromethane, adding Catalytic amount of N, N-lutidine, stirred for 5 minutes under nitrogen protection, then added dicyclohexylcarbodiimide (DCC), stirred and reacted for 2 hours under nitrogen protection, filtered to remove white precipitate, evaporated under reduced pressure After removing the solvent, the crude product was purified by column chromatography, eluting with dichloromethane-acetone with a volume ratio of 15:1 to obtain the compound of formula I.

[0018] For related reactions, see Reaction Scheme 1.

[0019]

[0020] Reaction 1

[0021] R in formula 1 can be hydrogen, or methyl, or isopropyl, or methylsulfomethylene, o...

Embodiment 1

[0031] Synthesis of 4α-4-L-glycine-N-(-formyl-2′, 2′, 6′, 6′-tetramethyl-4′-nitroxyl radical ester)podophylloester (Ia)

[0032] Add 20ml of water and 20ml of methanol, 0.30g of sodium tungstate and 0.20g of edetate disodium salt into a 250ml Erlenmeyer flask, shake to dissolve, then add 10g of 2,2,6,6-tetramethyl- 4-Hydroxypiperidine, put it on a magnetic stirrer, start stirring, add 30% hydrogen peroxide in batches after dissolving, continue stirring, the solution turns from colorless to yellow, then gradually deepens, and finally becomes orange red, the reaction is about After 8-10 hours, distill methanol and most of the water under reduced pressure, add a small amount of sodium carbonate to shake the residual liquid after cooling, add sodium chloride for salting out, extract with ether 3-4 times, combine the extracts with anhydrous chlorination Calcium was dried, ether was removed under reduced pressure, and the solid was cooled to obtain 10.5 g of orange-red solid 2,2,6,6...

Embodiment 2

[0042] 4α-4-L-alanine-N-(-formyl-2′,2′,6′,6′-tetramethyl-4′-nitroxyl ester)podophylloester (Ib) synthesis

[0043] The experimental procedure is the same as in Example 1, only alanine is used instead of glycine. The detection data of the product obtained by the reaction are as follows:

[0044] Yield: 90%; m.p.138-140°C; [α] D 25℃ =-68° (c=0.5, CH 2 Cl 2 )IR(KBr)υcm 1 : 3344, 17811716, 1485, 1507, 1589, 930, 1126, 1175, 1239, 1365; MS (FAB) m / z: 683 (M, 30), 397 (100); HRMS (ESl) C 35 h 43 N 2 o 12 Theoretical value (M+2H), 685.2967, measured value, 685.2962.ESR: g 0 =2.0058, (3)ΔH PP =44.268Gs,A N =15.81Gs (three peaks at 1×10 4 M, CH 2 Cl 2 )

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to novel podophyllotoxins compound the use of the compound and the process for preparing the compound.

Description

technical field [0001] The present invention relates to a new class of podophyllotoxin compounds, the use of this compound and the preparation method of this compound. Background technique [0002] Podophyllotoxin (Podophyllotoxin) is a class of natural active substances with significant cytotoxicity mainly isolated from plants of the Berberidaceae Podophyllum genus, and a medicinal plant with a long history of application. For a long time, podophyllotoxins As a medicinal ingredient, it has been widely used to promote blood circulation and dissipate stagnation, insect bites, pain boils, swollen poison, bruises, rheumatic pain, vomiting, warts and bronchitis. Since the 1940s, King and Shliivan first reported that podophyllotoxin has colchicine-like effects (Stahelin H.F., Eur. J. Cancer, 1970, 6, 303), but its clinical application was limited for a period of time due to its toxic side effects. Afterwards, many chemists and pharmacologists modified its structure in order to o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07D493/04
Inventor 刘映前田瑄
Owner LANZHOU UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com