The IR spectrum was obtained in a Perkin Elmer FT-IR 100 spectrometer, and the 1H- and 13C-NMR spectra were obtained using a Bruker Biospin UltrashieldTM 300 MHz NMR spectrometer (Bruker, Karlsruhe, Germany), at room temperature. The melting point (m. p.) of the compound was measured ...
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1,5,7-Triazabicyclo[4.4.0]dec-5-ene, a bicyclic guanidine base, has been found to be an excellent catalyst for Michael and Michael-type reactions. It forms 1:1 complex with lasalocid acid and crystal structure of the complex has been studied by X-ray diffraction, FT-IR spectroscopy and...
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819, 789, 756 cm−1. Its molecular formula was determined to be C28H21NO9from the [M+H]+peak atm/z516.1298 (calculated for C28H22NO9, 516.1295) in the positive ion HR-FTICR-MS spectrum, confirming the addition of an oxygen atom compared with the molecular formula of ericamycin. ...
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