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1.吉林农业大学,长春 130118;
2.吉林省中医药科学院,长春 130012;
3.长春中医药大学,长春 130118;
4.吉林省吉测检测技术有限公司,长春 130118
王雪,在读硕士,从事中药化学成分提取、分离及产品开发工作,Tel:0431-86058683,E-mail:401891251@qq.com
何忠梅,博士,副教授,从事中药化学成分提取、分离及产品开发工作,Tel:0431-86058683,E-mail:987329817@qq.com
收稿日期:2019-03-25,
网络出版日期:2019-04-04,
纸质出版日期:2019-10-20
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王雪, 南敏伦, 白雪, 等. 刺囊酸衍生物的合成及其对脂肪酶的抑制作用[J]. 中国实验方剂学杂志, 2019,25(20):125-130.
Xue WANG, Min-lun NAN, Xue BAI, et al. Synthesis of Echinocystic Acid Derivatives and Inhibitory Effect on Lipase[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(20): 125-130.
王雪, 南敏伦, 白雪, 等. 刺囊酸衍生物的合成及其对脂肪酶的抑制作用[J]. 中国实验方剂学杂志, 2019,25(20):125-130. DOI: 10.13422/j.cnki.syfjx.20191416.
Xue WANG, Min-lun NAN, Xue BAI, et al. Synthesis of Echinocystic Acid Derivatives and Inhibitory Effect on Lipase[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(20): 125-130. DOI: 10.13422/j.cnki.syfjx.20191416.
目的:
2
刺囊酸属于齐墩果烷型五环三萜类化合物,由于刺囊酸的首要结构特点为环系稳定,活性位点较少,因此该文主要对刺囊酸的结构进行修饰,合成一系列刺囊酸衍生物,以此来提高其生物利用度,并研究其抑制脂肪酶活性。
方法:
2
以天然脂肪酶抑制剂刺囊酸为原料,设计、合成新型刺囊酸衍生物,然后采用2,4-二硝基苯酚丁酸酯(2,4-dinitrophenyl butanoate,PNPB)法对其抑制脂肪酶作用进行研究。
结果:
2
合成了9个化合物,利用红外光谱,紫外,质谱,核磁共振谱等技术来表征其结构,经鉴定均为新化合物。进一步进行抑制脂肪酶活性实验,结果表明,所合成化合物
1~9
均对脂肪酶具有抑制作用,半抑制浓度(IC
50
)分别为7.03,2.05,2.14,3.65,3.24,0.28,0.34,0.46,0.39 g·L
-1
,其对脂肪酶的抑制率均明显高于先导化合物刺囊酸(IC
50
=7.17 g·L
-1
),且化合物
6~9
的抑制活性较强于阳性药奥利司他(Orlistat)(IC
50
=0.53 g·L
-1
),各化合物对脂肪酶抑制活性依次为化合物
6
>
7
>
9
>
8
>
奥利司他
>
2
>
3
>
5
>
4
>
1
>
刺囊酸。
结论:
2
以刺囊酸为先导化合物进行设计、合成衍生物,从而提高抑制脂肪酶活性的研究思路是可行的。
Objective:
2
Echinocystic acid(EA)is a kind of oleanolic pentacyclic triterpenoid compound
due to its main structural features of stability and less active sites
the structures of EA were modified in this paper to synthesize a series of EA derivatives
improve their bioavailability
and investigate their inhibitory effect on lipase.
Method:
2
In this study
EA derivatives were designed and synthesized from EA
which is a natural lipase inhibitor. Their inhibitory effects on lipase were tested by using 2
4-dinitrophenyl butanoate(PNPB) method.
Result:
2
Nine compounds were synthesized
and their structures were characterized by infrared spectrum (IR)
ultraviolet spectrum (UV)
mass spectrum (MS)
nuclear magnetic resonance spectrum (
1
H-NMR and
13
C-NMR)
all of which were identified as new compounds. Further experiments on the inhibitory effect on lipase showed that compounds
1-9
had higher inhibitory effects than EA
IC
50
=7.03
2.05
2.14
3.65
3.24
0.28
0.34
0.46
and 0.39 g·L
-1
. Compounds
6-9
had higher inhibitory effect than Orlistat(IC
50
=0.53 g·L
-1
). Inhibition rates were as follows:
6
>
7
>
9
>
8
>
Orlistat
>
2
>
3
>
5
>
4
>
1
>
EA.
Conclusion:
2
It is feasible to design and synthesize derivatives with EA as the lead compound to improve the inhibitory effect on lipase.
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