RESUMEN
Because of the complicated chemical composition of Traditional Chinese Medicines, their chemical profile study has been a great challenge. In the present work, a homologues prediction strategy for rapid screening and identification of C21 steroids in Xiao-ai-ping injection was developed by using an ultra high performance liquid chromatography coupled with high resolution hybrid quadrupole-orbitrap mass spectrometry. This strategy was characterized by the design of C21 steroidal skeleton, substituent group and glycan chain in an orderly way, which could quickly and efficiently screen the interested precursor ions. As a result, a total of 95C21 steroids including 47 potential new ones were identified or tentatively identified, which greatly expanded our knowledge of C21 steroids in Xiao-ai-ping injection. The results indicated that the homologues prediction strategy not only provided an efficient technique to screen and identify target constituents, but also offered a new perspective for discovery new components in Traditional Chinese Medicines.
Asunto(s)
Medicamentos Herbarios Chinos/química , Esteroides/química , Cromatografía Líquida de Alta Presión/métodos , Inyecciones/métodos , Iones/química , Medicina Tradicional China/métodos , Espectrometría de Masas en Tándem/métodosRESUMEN
Dan-Deng-Tong-Nao capsule (DDTN) was a traditional Chinese medicine (TCM) formula, and has been widely used for the treatment of stroke clinically which caused by blood stasis. However, the bioactive substances and mechanism are unclear because of the complex compositions in DDTN. In this research, An ultra high-performance liquid chromatography (UHPLC) coupled with hybrid quadruple-orbitrap mass spectrometry (Q-Orbitrap MS) method was utilized to identify the chemical constituents of DDTN. In total, 102 compounds including diterpenes, lactones, flavonoids, and phenolic acids were identified by the accurate masses and fragmentation pathways, and 18 of them were unambiguously determined by comparison of reference standards. Besides, 12 representative compounds were simultaneously quantification analyzed and successfully applified for detecting in 9 batches of DDTN samples by UHPLC-Q-Orbitrap MS in parallel reaction monitoring (PRM) mode. The proposed approach was validated to be satisfied in terms of linearity (0.9954-0.9999), LOD (0.771ng/mL), LOQ (2.568ng/mL), intra-day precision ( <2.68%), inter-day precision ( <4.52%), repeatability ( <2.96%), stability ( <3.21%), and recovery (94.6-105.5%). The results indicate that the method of combining UHPLC with Q-Orbitrap MS is practical and efficient for the chemical clarification in DDTN, and has great potential for the integrating quality control of other traditional Chinese medicines.
Asunto(s)
Cápsulas/química , Medicamentos Herbarios Chinos/química , Cromatografía Líquida de Alta Presión/métodos , Diterpenos/química , Flavonoides/química , Hidroxibenzoatos/química , Lactonas/química , Medicina Tradicional China/métodos , Control de Calidad , Estándares de Referencia , Reproducibilidad de los Resultados , Espectrometría de Masa por Ionización de Electrospray/métodos , Espectrometría de Masas en Tándem/métodosRESUMEN
Two new triterpenoid saponins were isolated from the 70% ethanol extract of the rhizome of Anemone amurensis, they are oleanolic acid 28-O-ß-d-glucopyranosyl-(1 â 3)-α-l-rhamnopyranosyl-(1 â 4)-ß-d-glucopyranosyl-(1 â 6)-ß-d-glucopyranosyl ester (1) and 23,27-dihydroxy oleanolic acid 3-O-α-l-arabinopyranoside (2). The structures of 1 and 2 were elucidated on the basis of chemical and spectral analysis, including 1D and 2D NMR data and HR-ESI-MS. Compounds 1 and 2 were tested for cytotoxicities against three human cancer cell lines (A549, Hep-G2, and MCF-7). Compound 1 showed potent cytotoxicity with IC50 values of 34.76, 41.17, and 28.92 µM, respectively, while compound 2 with IC50>100 µM.
Asunto(s)
Anemone/química , Antineoplásicos Fitogénicos/aislamiento & purificación , Medicamentos Herbarios Chinos/aislamiento & purificación , Ácido Oleanólico/aislamiento & purificación , Rizoma/química , Saponinas/aislamiento & purificación , Antineoplásicos Fitogénicos/química , Antineoplásicos Fitogénicos/farmacología , Ensayos de Selección de Medicamentos Antitumorales , Medicamentos Herbarios Chinos/química , Medicamentos Herbarios Chinos/farmacología , Células Hep G2 , Humanos , Células MCF-7 , Estructura Molecular , Resonancia Magnética Nuclear Biomolecular , Ácido Oleanólico/análogos & derivados , Ácido Oleanólico/química , Ácido Oleanólico/farmacología , Saponinas/química , Saponinas/farmacologíaRESUMEN
A new compound 3-acetyloxy-epicycloeucalenol-24-one (1), with 11 known compounds 3α-acetyloxy-4α,14α-dimethyl-9ß,19-cycloergost-24-oic acid (2), 3-epicycloeucalenol (3), 3-epicycloeucalenyl-24-one (4), 3-epicycloeucalenyl acetate (5), 4ß,14α-dimethyl-5α-ergosta-9ß,19-cyclo-24(31)-en-3ß-hydroxy-4α-carboxylic acid (6), cycloeucalenone (7), friedelin (8), epifriedelanol (9), lup-20 (29)-en-3ß,30-diol (10), betulin (11), lupeol (12), was isolated from the stems and leaves of Quercus variabilis Blume. Seven compounds (1-7) showed anti-inflammatory activity.