Journal: Chemistry of natural compounds / Publication Year: 2017 / Source: 2017 v.53 no.6 / Subject term: chemical structure

Author:: Jian-Hua Shao; Xue-Wei Zhang; Zi-Ling Dong; Si-Hui Li; Ben-Jie Miao; Ke-Zhi Cheng
Source:: Chemistry of natural compounds 2017 v.53 no.6 pp. 1025-1027
ISSN:: 0009-3130
Subject:: Cyclea; chemical structure; glucosides; lignans; spectral analysis
Abstract:: ... A new lignan glucoside 1, along with two known lignans (2, 3), was isolated from Cyclea racemosa Oliv. Its structure was elucidated as (+)-7′-methoxylariciresinol 4-O-β-D-glucopyranoside on the basis of extensive spectroscopic analyses. ...
DOI:: 10.1007/s10600-017-2193-y
: https://doi.org/10.1007/s10600-017-2193-y

Author:: Qing-hu Wang; Cui-lan Bai; Jing-jing Han; Bai-yinmu-qi-er Bao
Source:: Chemistry of natural compounds 2017 v.53 no.6 pp. 1080-1082
ISSN:: 0009-3130
Subject:: Asteraceae; chemical structure; ethyl acetate; nuclear magnetic resonance spectroscopy; plant extracts; triterpenoids
Abstract:: ... A new triterpenoid, namely 3β-(2-methoxy-5-formylphenoxy)-erythrodiol (1), was isolated from the EtOAc extract of Ixeris chinensis. The structures of 1 was elucidated by spectroscopic methods, including UV, IR, HR-ESI-MS, and extensive 1D and 2D NMR techniques. ...
DOI:: 10.1007/s10600-017-2205-y
: https://doi.org/10.1007/s10600-017-2205-y

Author:: I. B. Chernikova; L. V. Spirikhin; M. F. Abdullin; M. S. Yunusov
Source:: Chemistry of natural compounds 2017 v.53 no.6 pp. 1140-1143
ISSN:: 0009-3130
Subject:: chemical reactions; chemical structure; methanol; sulfuric acid
Abstract:: ... Treatment of 5-iodo-1,3,6-trimethyluracil or 5-bromo-1,3,6-trimethyluracil with H₂SO₄ (5%) in the presence of an excess of KI at 80°C for 5 h produced 1,3,6-trimethyluracil as the only product. Analogous treatment of N-bromo-6-iodomethyluracil gave a mixture with 5-bromo-6-iodomethyluracil as the main constituent. The reaction with an excess of KI in MeOH at 50°C formed 5-bromo-6-hydroxymethylurac ...
DOI:: 10.1007/s10600-017-2218-6
: https://doi.org/10.1007/s10600-017-2218-6

Author:: L. N. Gvazava; A. V. Skhirtladze
Source:: Chemistry of natural compounds 2017 v.53 no.6 pp. 1093-1095
ISSN:: 0009-3130
Subject:: Allium porrum; chemical structure; fractionation; spectral analysis; steroid saponins
Abstract:: ... A new steroidal glycoside (1) was isolated by fractionation of total extracted substances from Allium porrum. Its structure was determined as (25R)-5α-spirostan-3β,6β-diol-12-one 3-O-β-D-glucopyranosyl-(1→2)-[β-D-fucopyranosyl-(1→3)]-β-D-glucopyranosyl-(1→4)-β-D-galactopyranoside using chemical transformations, physical constants, and spectral data. ...
DOI:: 10.1007/s10600-017-2208-8
: https://doi.org/10.1007/s10600-017-2208-8

Author:: Yan Yang; Shan-Zhai Shang; Wei Zhao; Huan-huan Xing; Hang-Ying Ma; Ling Zhou; Min Zhou; Yan-Qing Ye; Hai-Yan Wu; Gang Du; Dong-Lai Zhu; Qiu-Fen Hu
Source:: Chemistry of natural compounds 2017 v.53 no.6 pp. 1127-1130
ISSN:: 0009-3130
Subject:: Senna alata; alkaloids; antiviral properties; chemical structure; nuclear magnetic resonance spectroscopy; seed extracts; seeds; spectral analysis; viruses
Abstract:: ... Two new alkaloids, 3-(hydroxymethyl)-6,9-dimethyl-7H-benzo[de]quinolin-7-one (1) and 3-(hydroxymethyl)-8-methoxy-6,9-dimethyl-7H-benzo[de]quinolin-7-one (2), together with two known alkaloids (3 and 4) were isolated from the seeds of Cassia alata. Their structures were determined by means of HR-ESI-MS and extensive 1D and 2D NMR spectroscopic studies. Compounds 1–4 were tested for their anti-tobac ...
DOI:: 10.1007/s10600-017-2215-9
: https://doi.org/10.1007/s10600-017-2215-9

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