TAILIEUCHUNG - Chemical constituents of ethyl acetate extract from Taxus wallichiana ZUCC. (taxaceae) leaves collected in Ha Giang province

Investigation on the chemical constituents of ethyl acetate extract from leaves of Taxus wallichiana Zucc. (Taxaceae), collected in Ha Giang province, has resulted in the isolation of three metabolites for the first time: sciadopitysin (1), β-sitosterol (2), and isoquercitrin (3). Their structures were determined by spectroscopic methods. | HNUE JOURNAL OF SCIENCE DOI Natural Sciences 2020 Volume 65 Issue 6 pp. 110-115 This paper is available online at http CHEMICAL CONSTITUENTS OF ETHYL ACETATE EXTRACT FROM Taxus wallichiana ZUCC. TAXACEAE LEAVES COLLECTED IN HA GIANG PROVINCE Pham Huu Dien1 Pham Thi My1 and Bui Tuan Nam2 1 Faculty of Chemistry Hanoi National University of Education 2 Yen Minh High School Ha Giang province Abstract. Investigation on the chemical constituents of ethyl acetate extract from leaves of Taxus wallichiana Zucc. Taxaceae collected in Ha Giang province has resulted in the isolation of three metabolites for the first time sciadopitysin 1 β-sitosterol 2 and isoquercitrin 3 . Their structures were determined by spectroscopic methods. Keywords Taxus wallichiana Zucc. sciadopitysin isoquercitrin. 1. Introduction Taxus wallichiana Zucc. Taxaceae named as cay thong do is widely distributed in higher than 1 500 m in the mountains of Northern such as Ha Giang Cao Bang provinces and Western Vietnam such as Da Lat Lam Dong provinces 1 2 . According to Vietnam traditional medicine this plant is used for curing asthma bronchitis hiccough indigestion epilepsy ascarid 1 . The fascinating molecule taxol 3 an important antitumor and anti-leukemic drug and its close analogs have been isolated from the plant. The genus Taxus was intensively investigated for the content not only of taxoids but also of other constituents for instance biflavones 4 flavones 5 lignans 6 diterpenoids 7 . This paper describes the isolation and structural elucidation of three metabolites from the leaves of Taxus wallichiana Zucc. collected in Ha Giang province. 2. Content . Materials and methods Plant material Leaves of Taxus wallichiana Zucc. were collected in Bat Dai Son commune Quan Ba distr. Ha Giang July 2017 and identified by Prof. Dr. Do Huu Thu Institute of Ecology Natural Resource and Biology VAST Vietnam . Voucher specimens are deposited at the faculty of .

• Sinh học
• Chemical constituents
• Ethyl acetate extract
• Ha Giang province
• Taxus wallichiana ZUCC
• Spectroscopic methods
• Bio chemical
• Melia dubia GCMS
• Analysis of bio chemical constituents
• Bio chemical constituents
• Melia dubia C bark
• Vietnam Journal of Science and Technology
• Initial study on chemical constituents
• Chemical constituents of bischofia javanica
• Bischofia javanica Blume leaves
• Jasmonic acid derivative
• Journal of Science and Technology
• The chemical constituents of ricinus communis
• The chemical constituents
• D NMR spectroscopic methods
• The Ricinus communis
• Studying chemical constituents
• Constituents of Nelumbo nucifera plants
• Nelumbo nucifera flower oil
• Collected by stream distillation
• Genaral experimental procedures
• Summary of doctoral thesis
• Summary of doctoral thesis on Chemistry
• Squirrel squirrel chemical composition
• Squirrel cytotoxic activity
• Glochidion Glomerulatum
• Squirrel squirrel species
• Glochidion Hirsutum
• Evaluation of toxic activity cells
• Luận án Tiến sĩ
• Luận án Tiến sĩ Hóa học
• Anthenea Aspera
• Anthenea Sibogae
• Biological activities
• Natural products chemistry
• Aspidistra letreae
• Cytotoxicity of Aspidistra letreae
• Evaluating cytotoxic activity
• Chemical structures of isolated compounds 1–5
• Công nghệ hóa học
• Contribution to the study
• Hedyotis auricularia l
• Thành phần hóa học
• Công nghệ hóa
• Wedelia trilobata
• Hóa lý
• Chemical constituents isolated
• Acorus tatarinowii schott
• Hóa hữu cơ
• Thảo dược
• Acorus tatarinowii
• Alpinia conchigera griff
• Hoạt tính sinh học
• Croton tonkinensis Gagnep
• Hóa dược
• Journal of Chemistry
• Further chemical constituents
• Scoparia dulcis L
• Scrophulariaceae originating
• The MeOH extract
• Initial research on chemical constituents
• Curcuma singularis rhizomes
• Curcuma singularis Gagnep
• 2D NMR spectroscopic data
• Chemical constituents and biological activities
• Alpinia kwangsiensis collected in Vietnam
• Methanol extract of Alpinia kwangsiensis roots
• Staphylococcus aureus and Bacillus subtilis
• Vietnam Journal of Chemistry
• Study on chemical constituents
• The lichen Parmotrema sancti angelii (Lynge) Hale
• X ray diffraction
• Salazinic acid distribution
• Further investigation on the chemical constituents
• Euphorbia tirucalli growing in Binh Thuan province
• Euphorbia tirucalli growing
• Normal phase silica gel column chromatography
• Summary of chemistry dotoral thesis
• Chemical constituents of the sponges Rhabdastrella providentiae
• Cytotoxic and antiinflammatory activities
• The sponges Rhabdastrella providentiae
• Xestospongia muta living in the sea area of Central Vietnam
• Summary of chemistry doctoral thesis
• Chemical constituents of Tacca vietnmensis and Tacca chantrierispecies
• Biological activities of Tacca vietnmensis
• Tacca chantrierispecies growing in Vietnam
• Find out bioactive compoundse
• Summary of the Doctoral thesis
• Biological activities of litsea glutinosa
• Lepisanthes rubiginosa
• Potential biological activities
• Cytotoxic activity of 3 species allophylus livescens gagnep
• Chirita halongensis kiew
• T
• nguyen and oldenlandia pinifolia kuntze]
• Concrete recovery
• Tuberose cultivars
• Industrial purpose
• Cultivated commercially
• Overall acceptability
• Chutney during storage
• Aonla papaya jam
• Bài viết khoa học
• Tạp chí Khoa học Công nghệ Việt Nam
• Investigation of antimicrobial activity
• Chemical constituents of momordica charantia
• BMC Chemistry
• Justicia procumbens
• Structural analysis
• Determinate content