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A facile approach for the construction of the oxetane ring from 5α-acyloxy-△4(20)-taxoids

Autor: Liang Xiao-tian, Guo Ji-yu, Liu Rui‐Wu, Yin Da-li

Publikováno v: Chinese Journal of Chemistry. 18:236-246

An oxetane ring can be constructed from 5 α-acyloxy-Δ4(20)-taxoids. The facile intramolecular acyl migration from 5- to 20-position under slightly basic conditions enabled the construction of the oxetane ring in a convenient short cut, whereas the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::72df24504fb0fe8c9713eebc00f34ad3
https://doi.org/10.1002/cjoc.20000180219

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New transmission mode of electromagnetic wave in high-density rod cavity structure

Autor: Tong Ji-Sheng, Guo Ji-Yu, Zhao Qing, Bo Yong, Ma Chun-Guang, Jiao Jiao

Publikováno v: Acta Physica Sinica. 67:015202

During reentry of hypersonic spacecraft into the atmosphere, a break in the radio communication due to the presence of a plasma sheath on the spacecraft can occur. The break is commonly known as reentry communication blackout. Normally, for high dens

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::83b8ce9e6cc74aa9b5f8e2a508c483ea
https://doi.org/10.7498/aps.67.20171728

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Akademický článek

A Constructive Extension of the Characterization on Potentially Ks,t-Bigraphic Pairs

Autor: Guo Ji-Yun, Yin Jian-Hua

Publikováno v: Discussiones Mathematicae Graph Theory, Vol 37, Iss 1, Pp 251-259 (2017)

Let Ks,t be the complete bipartite graph with partite sets of size s and t. Let L1 = ([a1, b1], . . . , [am, bm]) and L2 = ([c1, d1], . . . , [cn, dn]) be two sequences of intervals consisting of nonnegative integers with a1 ≥ a2 ≥ . . . ≥ am a

Externí odkaz: https://doaj.org/article/4a2f4bb0ca8a49789b5b747cfc038bd3

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