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A new ent-abietane diterpenoid, named dayecrystal C, was isolated from the EtOAc extract of the dried leaves of Isodon macrophyllus. Its structure was determined on the basis of spectroscopic methods.
A binaphthyl derivative with pyrene on 3 and 3′ positions was synthesized and characterized via Suzuki coupling reaction. Emission maximum in solution was located at 390nm with a quantum efficiency of 68% by taking 9,10-diphenyl anthracene as reference, while it is shifted to 450nm with FWHM of 104nm resulting from aggregation state in solid film. Glass transition temperature (T g ) and decomposition...
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