The domain ontology model consisted of e-maintenance knowledge meta-ontology ( EMKMO) and e-maintenance alliance ontology ( EMAO).
该领域本体模型包括e-维护知识元本体和e-维护联盟本体。
EMAO contains six hydroxyl groups, in which the 9 'hydroxyl group has the highest activity, so the 9' hydroxyl group needs to be protected intently, whereas the rests are free of protection.
EMAO分子中含有6个羟基,其中9位肟的羟基活性最高,因而选择性地对9位肟羟基进行反应而不需要保护其余的羟基。
The reactivity of Z, E isomer was detected. Result The reaction can be carried out under room temperature in the best solvent CH_3CN with a 5~ 6 times of EMAO ( volume ∶ mass).
结果反应可在室温下进行,CH3CN作溶剂最好,用量是EMAO的5~6倍(体积与质量比);
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