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Loasifolin, a new flavonoid from Eremostachys loasifolia

Loasifolin (1), a new highly oxygenated flavonoid, has been isolated from Eremostachys loasifolia and its structure is assigned on the basis of spectroscopic data including 1D and 2D NMR techniques. 6,7-Dihydroxycoumarin (2) and luteolin 4'-O-?

出版机构:Taylor & Francis

刊物名称:Journal of Asian Natural Products Research

出版时间:2010

ISSN:1028-6020

数据源:报刊文摘

Identification of a sulfonoquinovosyldiacylglyceride from Azadirachta indica and studies on its cytotoxic activity and DNA binding properties

Chromatographic separation of the methanolic extract of the leaves of Azadirachta indica led to the isolation of a sulfonoglycolipid characterized as a sulfonoquinovosyldiacylglyceride (SQDG), by extensive 2D NMR and mass spectral analysis.

出版机构:Elsevier Science

刊物名称:Bioorganic & Medicinal Chemistry Letters

出版时间:2010

ISSN:0960-894X

数据源:报刊文摘

Identification, isolation and characterization of a new degradation product in sultamicillin drug substance

new degradant of sultamicillin drug substance was found during the gradient reverse phase HPLC analysis of stability storage samples. The level of this degradant impurity was observed up to 1.0%.

出版机构:Elsevier Science

刊物名称:Journal of Pharmaceutical and Biomedical Analysis

出版时间:2011

ISSN:0731-7085

数据源:报刊文摘

Glaucasides A–C, three saikosaponins from Atriplex glauca L. var. ifiniensis (Caball) Maire

From the roots of Atriplex glauca L. var. ifiniensis (Caball) Maire (syn. of Atriplex parvifolia Lowe var.

出版机构:John Wiley & Sons, Ltd.

刊物名称:Magnetic Resonance in Chemistry

出版时间:2011

ISSN:0749-1581

数据源:报刊文摘

Triterpenoids from the bark of Ruptiliocarpon caracolito

Five CD-spirotriterpenoids were isolated from the bark of Ruptilicarpon caracolito. Their structures were determined by a combination of one- and two-dimensional NMR techniques, and mass spectrometry.

出版机构:Elsevier Science

刊物名称:Phytochemistry

出版时间:2010

ISSN:0031-9422

数据源:报刊文摘

Structure determination of selaginellins G and H from Selaginella pulvinata by NMR spectroscopy

Selaginellins G (1) and H (2), two new selaginellin derivatives, were isolated from the whole plant of Selaginella pulvinata. Their structures were elucidated, and complete assignments of the 1H and 13C NMR spectroscopic data were achieved by 1D and 2D NMR experiments (HSQC, HMBC, COSY and ROESY).

出版机构:John Wiley & Sons, Ltd.

刊物名称:Magnetic Resonance in Chemistry

出版时间:2010

ISSN:0749-1581

数据源:报刊文摘

Anthocyanins with unusual furanose sugar (apiose) from leaves of Synadenium grantii (Euphorbiaceae)

Four apiose containing anthocyanins from leaves of Synadenium grantii (Euphorbiaceae) were for the first time identified.Four anthocyanins, cyanidin 3-O-(2?-(5?-(E-p-coumaroyl)-?-apiofuranosyl)-?-xylopyranoside)-5-O-?-glucopyranoside, cyanidin 3-O-(2?-(5?-(E-p-coumaroyl)-?-apiofuranosyl)-?

出版机构:Elsevier Science

刊物名称:Phytochemistry

出版时间:2010

ISSN:0031-9422

数据源:报刊文摘

Phase cycling in MQMAS sequences for half-integer quadrupole spins

出版机构:Elsevier Science

刊物名称:Progress in Nuclear Magnetic Resonance Spectroscopy

出版时间:2010

ISSN:0079-6565

数据源:报刊文摘

NMR (1D and 2D) and X-ray crystallographic studies of Ni(II) complex with N-(2-mercaptophenyl)-4-methoxysalicylideneimine and triphenylphosphine

Mononuclear nickel(II) complex, viz. [Ni(L)(PPh3)] (where L is dianion of N-(2-mercaptophenyl)-4-methoxysalicylideneimine) has been synthesized and characterized by means of elemental analysis, electronic, IR and NMR [1H, 13C{1H} and 31P{1H}, DEPT, 1H?

出版机构:Elsevier Science

刊物名称:Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

出版时间:2010

ISSN:1386-1425

数据源:报刊文摘

Structure elucidation of new acacic acid-type saponins from Albizia coriaria

Three new acacic acid derivatives, named coriariosides C, D, and E (1-3) were isolated from the roots of Albizia coriaria. Their structures were elucidated on the basis of extensive 1D- and 2D-NMR studies and mass spectrometry as 3-O-[?-D-xylopyranosyl-(1 ? 2)-?-D-fucopyranosyl-(1 ?

出版机构:John Wiley & Sons, Ltd.

刊物名称:Magnetic Resonance in Chemistry

出版时间:2010

ISSN:0749-1581

数据源:报刊文摘