209005-76-5Relevant articles and documents
Novel photochromic homopolymers based on 1,2-Bis(3-thienyl)cyclopentenes
Myles, Andrew J.,Branda, Neil R.
, p. 298 - 303 (2003)
Incorporation of photochromic molecules into polymer matrices is necessary for materials applications such as optical information processing. Several novel homopolymers were prepared from l,2-bis(3-thienyl)cyclopentene derivatives using ring-opening metathesis polymerization techniques. Analysis by UV-vis absorption spectroscopy revealed that, in solution, they retained the appealing photochromic behavior exhibited by their respective monomers. The polymers were cast as thin films and spin-coated onto quartz substrates where the solid-state photochromic properties of the polymers were similar to those in solution.
Synthesis of Isoxazole-Linked Norcantharidin Analogues of Substituted Chromones
Wang, Wei,Deng, Liping,Hu, Chunqi,Zhang, Yaohong,Li, Yan,Zuo, Shufeng
, p. 1806 - 1811 (2017/05/29)
Eighteen novel norcantharidin derivatives, which were substituted by chromone ring, were synthesized in a single step by the [3 + 2] 1,3-dipolar cycloaddition reaction with three oximes in the presence of chloramine-T when compared with the conventional method.
Containing chromon structure-isoxazole Norcantharidin derivative and its preparation method and application
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Paragraph 0020; 0032; 0034, (2017/02/02)
The invention discloses novel chromone structure containing isoxazole norcantharidin derivatives as well as a preparation method and an application thereof. The preparation method is characterized by introducing isoxazole rings to C5 and C6 in a norcantharidin structure by using a 1,3-dipolar cycloaddition method to react with chromone derivatives to import the chromone structures, thus synthesizing a series of totally six novel chromone structure containing isoxazole norcantharidin derivatives. The isoxazole norcantharidin derivatives are applied to synthesis of antitumor drugs and have broad application prospects.