Vietnam Journal of Chemistry

Công bố khoa học tiêu biểu

* Dữ liệu chỉ mang tính chất tham khảo

Sắp xếp:  
Synthesis and antibacterial activities of some novel hybrid compounds based on 2‐mercapto‐3‐arylquinazolin‐4(3H)‐one scaffold bearing specific coumarin
Vietnam Journal of Chemistry - Tập 61 Số S2 - Trang 131-136 - 2023
Linh Bui Thi Thuy, Phuoc Le Thien, Chi–Hien Dang, Hai Ha Pham Thi, Cong Tien Nguyen
AbstractTwo series of novel hybrid compounds, in which a variety of 2‐mercapto‐3‐arylquinazolin‐4(3H)‐ones (3a‐d)/6‐bromo‐2‐mercapto‐3‐phenylquinazolin‐4(3H)‐one (9) act as fundamental moieties are incorporated in particular 3‐(2‐bromoacetyl)‐2H... hiện toàn bộ
Recovery of L-lactic acid from fermantaion broth by using strong anionic resin.
Vietnam Journal of Chemistry - Tập 48 Số 5 - 2012
The technique of ion exchange for separation of lactic acid from fermentation broth is used in our study. The ion exchange resin used is a strong anionic resin, a product of Jacobi Carbons Company, Italy (trade name is Resinex A-4). The process at laboratory scale is realized in a chromatographic column with dimensions d x h = 10mm x 110mm which contains 6 g of anionic resin. Two solvents used are...... hiện toàn bộ
Phenolic glycosides from Antidesma ghaesembilla
Vietnam Journal of Chemistry - Tập 54 Số 2 - Trang 170 - 2016
Le Canh Viet Cuong, Do Thi Trang, Nguyen Xuan Nhiem, Pham Hai Yen, Bui Huu Tai, Hoang Le Tuan Anh, Le Mai Huong, Nguyen Quoc Binh, Chau Van Minh, Phan Van Kiem
Five phenolic glycosides, vanillyl alcohol 4-O-β-D-glucopyranoside, 4-hydroxy-3,5-dimethoxybenzyl-O-β-D-glucopyranoside, 3-hydroxy-4,5-dimethoxyphenyl-O-β-D-glucopyranoside, 3,4,5-trimethoxyphenyl-O-β-D-glucopyranoside, and sinapyl alcohol 4-O-β-D-glucopyranoside (1-5), respectively were isolated from the methanol extract of the Antidesma ghaesembilla leaves. Their structures were elucidated by sp...... hiện toàn bộ
#Antidesma ghaesembilla #Euphorbiaceae #phenolic.
flavonoids from Fissistigma acuminatissima
Vietnam Journal of Chemistry - Tập 45 Số 5 - 2012
From the leaves of Fissistigma acuminatissima growing in Vietnam, two flavonoids, catechin and isorhamnetin-3-o-rutinoside were isolated. Their structures were characterized on the basis of MS and NMR spectra data and comparison with reported data.Keywords: Annonaeae; Fissistigma acuminatissima; catechin; isorhamnetin-3-o-rutinoside.
Preliminary assessment of organochlorine pesticide residues in the sediment from serveral estuaries and Tam Giang - Cau Hai lagoon, Thua Thien Hue, 2005
Vietnam Journal of Chemistry - Tập 45 Số 3 - 2012
Organochlorine pesticide residue were determined in sediments collected from three estuary zones fowarding Tam Giang - Cau Hai Lagoon, Thua Thien Hue, Vietnam during the dry season in 2005. A total of 10 sediment samples were collected at the river estuaries and along the lagoon. Base on Sediment Criteria of Environmental Protection Agency (US EPA, 1999) [1] and the Canadian Environmental Quality ...... hiện toàn bộ
Biscembranoids from Vietnamese marine sponge Petrosia nigricans
Vietnam Journal of Chemistry - Tập 53 Số 2e - 2015
Three biscembranoids, lobophytone H (1), lobophytone U (2), and methyl tortuoate B (3), were isolated from the methanol extract of Vietnamese marine sponge Petrosia nigricans. Their structures were determinated on the basis of 1D and 2D-NMR, HR-ESI-MS and in comparison with the reported data.
#Petrosia nigricans #biscembranoids
Fluorescent properties of some polythiophenes synthesized from 2‐(thiophen‐3‐yl)acetohydrazide and acetophenone
Vietnam Journal of Chemistry - Tập 58 Số 5 - Trang 688-696 - 2020
Ngoc Linh Nguyen, Hà Mạnh Hùng, Đoàn Thị Yến Oanh, Bui Thi Thuy Linh, Nguyễn Tiến Công, Nguyễn Thúy Chinh, Thai Hoang, Vũ Quốc Trung
AbstractIn this study, new polythiophenes containing hydrazone groups from derivatives of acetophenone were synthesized by chemical oxidative coupling polymerization. Ultraviolet‐visible spectroscopy (UV‐Vis) combined with infrared (IR) analyses proved the supposed structure of novel polythiophenes and proved conformance of the expected s...... hiện toàn bộ
CHẾ TẠO VÀ NGHIÊN CỨU TÍNH CHẤT, CẤU TRÚC CỦA VẬT LIỆU COMPOZIT TRÊN CƠ SỞ POLYETYLEN VÀ BÃ THẢI PHOTPHOGYP BIẾN TÍNH HỮU CƠ
Vietnam Journal of Chemistry - Tập 49 Số 3 - 2012
Thái Hoàng
This report dealed with using phosphogypsum (PG) waste as filler for high density polyethylene (HDPE) based composites. PG was modified by stearic acid and denoted as MPG. The composites of HDPE/MPG and HDPE/unmodified PG were prepared by melt mixing in a Haake Rheomixer. The presence of polyethylene grafted with acrylic acid (PEg) was used as a coupling agent for PG and HDPE. The obtained results...... hiện toàn bộ
Các hợp chất đitecpenoit phân lập từ quả cây na biển (Annona glabra) (Phần 1)
Vietnam Journal of Chemistry - Tập 53 Số 3 - Trang 390-393 - 2015
Phan Văn Kiệm, Nguyễn Thị Thu Hiền, Phạm Hải Yến, Dương Thị Dung, Đan Thị Thúy Hằng, Nguyễn Xuân Nhiệm, Trần Minh Đức, Ninh Khắc Bản, Hoàng Lê Tuấn Anh, Châu Văn Minh
Four kaurane diterpenoids, 16β,17-dihydroxy-ent-kaurane (1), 16β,17-dihydroxy-ent-kauran-19-al (2), 16β,17-dihydroxy-ent-kauran-19-oic acid (3) and 16α,17-dihydroxy-ent-kaurane (4) were isolated from the methanol extract of the Annona glabra fruits by various chromatographic experiments. Their structures were characterized and revised by 1D-, 2D-NMR spectra, and ESI-MS, as well as in comparison wi...... hiện toàn bộ
#Annona glabra #Annonaceae #kaurane diterpenoid
Nghiên cứu ảnh hưởng của dầu ve đến tính chất mỡ phân hủy sinh học gốc xà phòng liti trên cơ sở hỗn hợp dầu sở-ve
Vietnam Journal of Chemistry - - 2012
Phạm Thúy Hà, Hoàng Trọng Yêm
With the purpose to develop an environmental friendly biodegradable lithium grease based on non-modified vegetable oils (blend of castor oil and therasunquli oil) the paper presented the results of research for the influences of quantity of castor oil in the blend on the properties of the performed grease. The paper also emphasized these influences on the neutralization procedure in preparation of...... hiện toàn bộ
Tổng số: 851   
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 10