根据化学转化、1H和13C核磁共振谱,从黄合花中分离得到的dauroside D的结构已确定为6-C-β-D-吡喃葡萄糖基-5,7-二羟基香豆素。已经报道了其醋酸盐的 1 H NMR 光谱的一些有趣的特征,并对其 1 H 和 13 C NMR 光谱中的信号进行了分配。Dauroside D 是第一种天然香豆素 C-糖苷。
Biocatalytic C-Glucosylation of Coumarins Using an Engineered C-Glycosyltransferase
作者:Dawei Chen、Ridao Chen、Kebo Xie、Tian Yue、Xiaolin Zhang、Fei Ye、Jungui Dai
DOI:10.1021/acs.orglett.8b00378
日期:2018.3.16
The enzymatic synthesis of coumarin C-glucosides by an engineered C-glycosyltransferase, MiCGTb-GAGM, was explored in vitro and in vivo. MiCGTb-GAGM exhibited a robust C-glucosylation capability toward structurally diverse coumarin derivatives. The whole-cell bioconversion of MiCGTb-GAGM was exploited for large-scale production of coumarin C-glucosides. Two C-glucosides exhibited potent SGLT2 inhibitory activities with IC50 values at 10(-6) M. These findings provide cost-effective and practical synthetic strategies to generate structurally diverse and novel bioactive coumarin C-glycosides for drug discovery.
Coumarins ofHaplophyllum dauricum. 5,7-Dihydroxycoumarin and its C-glucoside
作者:D. Batsurén、É. Kh. Batirov、V. M. Malikov
DOI:10.1007/bf00575057
日期:1982.9
Biocatalytic Application of a Membrane‐Bound Coumarin C‐Glucosyltransferase in the Synthesis of Coumarin and Benzofuran C‐Glucosides
作者:Dawei Chen、Shuai Fan、Zhaoyong Yang、Jungui Dai
DOI:10.1002/adsc.202100041
日期:2021.11.23
been recently identified, whereas the coumarin CGTs have not been found. Here we reported the first identification of a coumarin C-glucosyltransferase MaCGT from Morus alba. The whole-cell biocatalyst harboring MaCGT was exploited and exhibited strictly and efficiently regio- and stereo-specific C-glucosylation capacity toward structurally different coumarins. The whole-cell of MaCGT was further applied
1H and13C NMR spectra and the structure of a new coumarin, C-glycoside dauroside D, fromHaplophyllum dauricum
作者:A. D. Vdovin、D. Batsurén、É. Kh. Batirov、M. R. Yagudaev、V. M. Malikov
DOI:10.1007/bf00575694
日期:1983.7
On the basis of chemical transformations,1H and13CNMR spectra, the structure of dauroside D isolated fromHaplophyllum dauricum has been established as 6-C-β-D-glucopyranosyl-5,7-dihydroxycoumarin. Some interesting features of the1HNMR spectra of its acetate have been reported and an assignment of the signals in its1H and13CNMR spectra has been made. Dauroside D is the first natural coumarin C-glycoside
根据化学转化、1H和13C核磁共振谱,从黄合花中分离得到的dauroside D的结构已确定为6-C-β-D-吡喃葡萄糖基-5,7-二羟基香豆素。已经报道了其醋酸盐的 1 H NMR 光谱的一些有趣的特征,并对其 1 H 和 13 C NMR 光谱中的信号进行了分配。Dauroside D 是第一种天然香豆素 C-糖苷。