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Dimeric sesquiterpene compound and applications thereof

A compound and group technology, applied in the field of natural medicinal chemistry, to achieve unique aroma characteristics, good hair permeability, and good resistance to prolyl endopeptidase activity

Active Publication Date: 2010-07-28
KUNMING INST OF BOTANY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also few reports on the application of sesquiterpenoids

Method used

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  • Dimeric sesquiterpene compound and applications thereof
  • Dimeric sesquiterpene compound and applications thereof
  • Dimeric sesquiterpene compound and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Extraction and separation of compound 1:

[0045] 1. Extraction and separation:

[0046] Leaves of Leucosceptrum canum Smith (12.5kg) were dried in the shade, crushed to 30 mesh, extracted by cold immersion in n-hexane for 3 times (each time 40 liters, 24 hours), the extracts were combined, and the extracts were concentrated under reduced pressure Obtain medicinal extract (203g), the medicinal extract is mixed with silica gel (200-300 mesh) sample after dissolving appropriate amount of chloroform / acetone, 1.5kg silica gel (200-300 mesh) carries out coarse separation with thick and short type silica gel column, with different proportions Petroleum ether-chloroform (1:0-0:1), chloroform-acetone (1:0-0:1) for gradient elution, each 1000mL as a fraction, a total of 400 parts. TLC detection merged the same fractions to obtain 9 main fractions. Among them, the sixth part (40g) uses MCI-gel (60-100% MeOH-H 2 (0) After treatment, 4 parts were obtained, and then Fr6a-3 (85% M...

Embodiment 2

[0050] Extraction, separation and structure identification of compound 2:

[0051] 1. Extraction and separation:

[0052] According to Example 1, the flowers and leaves of rice balls are extracted and separated, and then Fr6a-4 (89% MeOH, 10g) is subjected to silica gel column chromatography with petroleum ether: ethyl acetate (35: 1) as the eluting solvent, and every 100mL As a fraction, 150 parts were collected, of which 40-96 parts Sephadx-LH20 (CHCl 3 : MeOH = 1: 1) and then semi-preparative liquid phase (80% MeOH: H 2 O) Purification afforded compound 2 (300 mg).

[0053] 2. Compound structure identification:

[0054] The compound is a colorless oil; optical activity, [α] D 29 =+55.5 (c=0.9, solvent is chloroform); UV spectrum (solvent is chloroform), λ max (logε)=240(3.06)nm; infrared spectrum (potassium bromide tablet)ν max =3442, 2962, 2934, 2870, 1702, 1452, 1376, 1276, 1150, 1052, 983, 727cm -1 ;negative FAB-MS m / z(%): 399(20)[M-H] - , 381(59), 279(100), 255...

Embodiment -3

[0056] Extraction, separation and structure identification of compound 3:

[0057] 1. Extraction and separation

[0058] Leucosceptrum canum Smith leaves (5.2kg) were dried in the shade, crushed to 30 mesh, extracted 3 times with methanol hot reflux (15 liters each time, 4 hours), the extracts were combined, and the extracts were concentrated under reduced pressure to obtain Total extract (125g), total extract is extracted with ethyl acetate (4 times, each 3 liters) to obtain ethyl acetate extract (65g), ethyl acetate extract is dissolved with silica gel (200 -300 mesh) mixed sample, 0.5kg silica gel (200-300 mesh) was roughly separated with a thick and short silica gel column, with different ratios of petroleum ether-chloroform (1:0-0:1), chloroform-acetone (1: 0-0:1) gradient elution, each 500mL as a fraction, a total of 300 parts. TLC detection merged the same fractions to obtain 8 main fractions. Wherein the 6th part (28g) uses MCI-gel (60-100% MeOH-H 2 (0) After treat...

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Abstract

The invention provides a dimeric sesquiterpene compound, a preparation method thereof and the applications in aspects of angiogenesis inhibition, anti-prolyl endopeptidase, antibiosis, apastia and spice by using the compound as an active component.

Description

Technical field: [0001] The present invention relates to the field of natural medicinal chemistry, in particular to a class of sesquiterpene compounds, a pharmaceutical composition with the compound as an active ingredient, and its functions in inhibiting angiogenesis, anti-prolyl endopeptidase, antibacterial, antifeedant , and applications in spices. technical background: [0002] Leucosceptrum canum Smith, also known as honey flower and mountain honey, is a perennial shrub or tree. It is mainly distributed in Yunnan, Sichuan and southeast Tibet in my country. Its nectar is brown. In Wa medicine, the root bark and leaf decoction of Mituanhua can be taken orally to treat cold, fever and gastritis. According to literature reports, Choudhary et al. found 7 sesquiterpene compounds with novel structures in the rice ball flowers and leaves collected from Nepal. These sesquiterpenoids have certain anti-prolyl endopeptidase and anti-angiogenic activities. However, Pu Xiangyu and...

Claims

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Application Information

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IPC IPC(8): C07D307/77C07D307/46A61K31/365A61P31/04A61P35/00A61P25/28A61P3/04C11B9/00
Inventor 黎胜红骆世洪
Owner KUNMING INST OF BOTANY - CHINESE ACAD OF SCI
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