We reported the discovery of six novel coumarins, toddasirins A–F ( 1 – 6 ), each endowed with modified isoprenyl or geranyl side chains, derived from the roots of Toddalia asiatica. Comprehensive structural elucida...We reported the discovery of six novel coumarins, toddasirins A–F ( 1 – 6 ), each endowed with modified isoprenyl or geranyl side chains, derived from the roots of Toddalia asiatica. Comprehensive structural elucidation was achieved through multispectroscopic analyses, single-crystal X-ray diffraction experiments, and advanced quantum mechanical electronic circular dichroism (ECD) calculations. Furthermore, the anti-inflammatory activity of these compounds was assessed. Notably, compounds 1 – 3 and 6 demonstrated notable inhibitory effects on nitric oxide (NO) production in lipopolysaccharide (LPS)-induced RAW 264.7 cells, with 50% inhibitory concentration (IC50) values of 3.22, 4.78, 8.90, and 4.31 μmol·L^(−1), respectively.展开更多
[Objectives]Effects of different processing techniques on the total alkaloid content in Toddalia asiatica Lam.were investigated by ultraviolet spectrophotometry.[Methods]T.asiatica was processed by the water washing m...[Objectives]Effects of different processing techniques on the total alkaloid content in Toddalia asiatica Lam.were investigated by ultraviolet spectrophotometry.[Methods]T.asiatica was processed by the water washing method,water boiling method,water steaming method,wine steaming method and wine processing method,and the total alkaloid content was determined by ultraviolet spectrophotometry.[Results]Different processing methods can affect the total alkaloid content in the medicinal materials.Among them,the water steaming method and the wine processing method can increase the total alkaloid content of the medicinal materials,and the degree of improvement was higher in the water steaming method;and the water boiling method,water washing method and wine steaming method can reduce the total alkaloid content of the materials,and showed a reduction order of water boiling method>water washing method>wine steaming method.[Conclusions]The water steaming method and the wine processing method can increase the total alkaloid content in T.asiatica,and the water boiling method,water washing method and wine steaming method can reduce the total alkaloid content of the medicinal material.展开更多
Toddalia asiatica Linn. is an important medicinal plant belonging to the family Rutaceae. The plant is well known for its antimalarial activity, which has been attributed to the presence of benzophenanthridine alkaloi...Toddalia asiatica Linn. is an important medicinal plant belonging to the family Rutaceae. The plant is well known for its antimalarial activity, which has been attributed to the presence of benzophenanthridine alkaloid nitidine in the roots of plants. A simple, rapid, sensitive, accurate, repeatable and robust HPTLC method has been developed and validated for the quantitative determination of nitidine in the dried roots and plant tissue culture extracts of T. asiatica. Nitidine was estimated at 332 nm by densitometry using Silica gel 60 F254 as stationary phase and chloroform:methanol (7:1, v/v), and as mobile phase. Linearity was observed in the concentration range of 25 -200 ng/spot for nitidine. The limit of detection and limit of quantitation were found to be 0.026 and 0.086 ng/spot respectively for nitidine. Developed method was validated according to the ICH guidelines with respect to precision, accuracy, specificity and robustness. The technique has been applied for the first time for the estimation of nitidine in roots and plant tissue culture extracts of T. asiatica. Statistical analysis data indicate the accuracy and reliability of the method.展开更多
基金supported financially by the National Natural Science Foundation of China(No.82104014 and 82003605)the Key Laboratory Project of Colleges and Universities in Guangdong Province(No.2019KSYS005)the Guangdong Province Science and Technology Plan International Cooperation Project(No.2020A0505100052)。
文摘We reported the discovery of six novel coumarins, toddasirins A–F ( 1 – 6 ), each endowed with modified isoprenyl or geranyl side chains, derived from the roots of Toddalia asiatica. Comprehensive structural elucidation was achieved through multispectroscopic analyses, single-crystal X-ray diffraction experiments, and advanced quantum mechanical electronic circular dichroism (ECD) calculations. Furthermore, the anti-inflammatory activity of these compounds was assessed. Notably, compounds 1 – 3 and 6 demonstrated notable inhibitory effects on nitric oxide (NO) production in lipopolysaccharide (LPS)-induced RAW 264.7 cells, with 50% inhibitory concentration (IC50) values of 3.22, 4.78, 8.90, and 4.31 μmol·L^(−1), respectively.
基金Supported by Key Laboratory for Basic and Applied Research of Zhuang Medical Prescriptions in Colleges and Universities in Guangxi(GJKY [2017]23zyfy201707)Guangxi Key Laboratory of Zhuang and Yao Medicine(GKZJ[2014]32)Collaborative Innovation Center for Zhuang and Yao Medicines(GJKY[2013]20)
文摘[Objectives]Effects of different processing techniques on the total alkaloid content in Toddalia asiatica Lam.were investigated by ultraviolet spectrophotometry.[Methods]T.asiatica was processed by the water washing method,water boiling method,water steaming method,wine steaming method and wine processing method,and the total alkaloid content was determined by ultraviolet spectrophotometry.[Results]Different processing methods can affect the total alkaloid content in the medicinal materials.Among them,the water steaming method and the wine processing method can increase the total alkaloid content of the medicinal materials,and the degree of improvement was higher in the water steaming method;and the water boiling method,water washing method and wine steaming method can reduce the total alkaloid content of the materials,and showed a reduction order of water boiling method>water washing method>wine steaming method.[Conclusions]The water steaming method and the wine processing method can increase the total alkaloid content in T.asiatica,and the water boiling method,water washing method and wine steaming method can reduce the total alkaloid content of the medicinal material.
文摘Toddalia asiatica Linn. is an important medicinal plant belonging to the family Rutaceae. The plant is well known for its antimalarial activity, which has been attributed to the presence of benzophenanthridine alkaloid nitidine in the roots of plants. A simple, rapid, sensitive, accurate, repeatable and robust HPTLC method has been developed and validated for the quantitative determination of nitidine in the dried roots and plant tissue culture extracts of T. asiatica. Nitidine was estimated at 332 nm by densitometry using Silica gel 60 F254 as stationary phase and chloroform:methanol (7:1, v/v), and as mobile phase. Linearity was observed in the concentration range of 25 -200 ng/spot for nitidine. The limit of detection and limit of quantitation were found to be 0.026 and 0.086 ng/spot respectively for nitidine. Developed method was validated according to the ICH guidelines with respect to precision, accuracy, specificity and robustness. The technique has been applied for the first time for the estimation of nitidine in roots and plant tissue culture extracts of T. asiatica. Statistical analysis data indicate the accuracy and reliability of the method.
