Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Wen Dan Xu"'
Publikováno v:
Organic Letters. 21:6761-6764
Total synthesis of (±)-cochlearol A was accomplished, which features a cis 6/6 B/D ring synthesis. A TMSOTf-promoted lactonization of tert-butoxy ketoester produced the desired lactone with quaternary carbon. The cis configuration of the B/E ring is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0baac6f51d9707abf1ea891141787a7e
https://doi.org/10.1021/acs.orglett.9b02391
https://doi.org/10.1021/acs.orglett.9b02391
Autor:
Gang Xu, Da-Wei Zhang, Wen-Dan Xu, Chun-Yan Wu, Fan Xia, Hong-Bo Qin, Xing-Wei Yang, Yu Zhang, Hui-Chun Geng
Publikováno v:
Organic Chemistry Frontiers. 5:1262-1266
Salviyunnanone A (1), a cytotoxic diterpenoid possessing an unprecedented 7/5/6/3 ring system derived from a normal abietane skeleton, was characterized from Salvia yunnanensis. Its structure was established by extensive MS and NMR spectroscopic anal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f9c4e91ef4451a3b8316324de0a72e1
https://doi.org/10.1039/c7qo01140g
https://doi.org/10.1039/c7qo01140g
Publikováno v:
Natural Products and Bioprospecting
Catalytic asymmetric formal synthesis of (−)-Triptophenolide and (+)-Triptolide have been achieved. Key reaction involves Palladium catalyzed asymmetric conjugate addition of aryl boronic acid to 3-methyl cyclohexe-1-none to form quaternary carbon.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdc41ef9b4d303c64746000ffdc0709c
http://europepmc.org/articles/PMC5385656
http://europepmc.org/articles/PMC5385656
Autor:
Dong Chen, Hao-Miao Liu, Xiao-Nian Li, Yan Li, Yong-Min Yan, Wen-Dan Xu, Ming-Ming Li, Hong-Bo Qin, Yong-Xian Cheng
Publikováno v:
Chemical communications (Cambridge, England). 52(55)
Enantioselective total synthesis of (+)-Lingzhiol has been achieved. It is the first example of in tandem semipinacol rearrangement reactions, the migrated aryl group further reacting with the carbonyl oxonium electrophile to furnish a polycyclic ske
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2ef3627c0df459cedb47c68695a45ae
https://pubmed.ncbi.nlm.nih.gov/27321202
https://pubmed.ncbi.nlm.nih.gov/27321202
Publikováno v:
Applied Mechanics and Materials. :2634-2639
The characteristics of the high-density circuits are high assembly density of the components and complex functions. It is difficult to detect the electrical defects by the existing optical techniques. The Electromagnetic Scan (EMScan) technology as a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc5203e4b81130ba15270c0349c67625
https://doi.org/10.4028/www.scientific.net/amm.217-219.2634
https://doi.org/10.4028/www.scientific.net/amm.217-219.2634
Publikováno v:
Applied Mechanics and Materials. :2445-2449
This paper presents an improved video segmentation scheme, which consists of two stages: initial segmentation and motion estimation. In the initial segmentation, the watershed transformation followed by a region adjacency graph guided region merging
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::893f855746fa149e986256bab206ba4b
https://doi.org/10.4028/www.scientific.net/amm.220-223.2445
https://doi.org/10.4028/www.scientific.net/amm.220-223.2445
Publikováno v:
Advanced Materials Research. :374-378
Due to the high frequency, high density and high reliability requirements, as well as the difficulty of assembly, the lower qualified yield and the higher returning rate of the high density circuit module etc, a new testing method of high-density cir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::603d5b2a28484d34c30954789fdcc03c
https://doi.org/10.4028/www.scientific.net/amr.588-589.374
https://doi.org/10.4028/www.scientific.net/amr.588-589.374
Publikováno v:
International Journal of RF and Microwave Computer-Aided Engineering. 21:363-370
Electromagnetic interference is a significant problem in high-speed circuits. To minimize its effect and improve the electrical characteristics of circuits such as signal integrity and electromagnetic compatibility, the application of an electromagne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bb9515f1ff0bbef58500d07f9c6cbdd
https://doi.org/10.1002/mmce.20516
https://doi.org/10.1002/mmce.20516
Autor:
Qiang Wang, Xin-Quan Lai, Qiang Ye, and Ming-Xiang Zang, Jian-Guo Jiang, Hui-Sen He, Wen-Dan Xu
Publikováno v:
Progress In Electromagnetics Research Letters. 18:29-39
Simultaneous switching noise (SSN) is a signiflcant problem in high-speed circuits. To minimize its efiect and improve the electrical characteristics of circuits such as signal integrity (SI) and power integrity (PI), a novel power plane with planar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51584c68f9d1213fb92b00e1b48618d3
https://doi.org/10.2528/pierl10080102
https://doi.org/10.2528/pierl10080102
Autor:
Xiao-Nian Li, Hao-Miao Liu, Ming-Ming Li, Wen-Dan Xu, Dong Chen, Yong-Xian Cheng, Hong-Bo Qin, Yong-Min Yan
Publikováno v:
ChemInform. 46
Concise synthesis of (±)-Lingzhiol has been achieved. The key reaction involves one-step construction of a 5/5/6/6 tetra-ring backbone of Lingzhiol via epoxy-arene cyclization.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2dab78bfd62eeed67f3c2f250ee8dc4f
https://doi.org/10.1002/chin.201545211
https://doi.org/10.1002/chin.201545211