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Preparation of 2,5-Bis(Aminomethyl)Furan by Direct Reductive Amination of 2,5-Diformylfuran over Nickel-Raney Catalysts 被引量:4
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作者 Ngoc-Thuc Le Areum Byun +2 位作者 yohan han Kee-In Lee Hyungrok Kim 《Green and Sustainable Chemistry》 2015年第3期115-127,共13页
The direct reductive amination of 2,5-diformylfuran (DFF) with ammonia to 2,5-bis(aminomethyl)furan (BAF) was demonstrated, for the first time, over the commercial type Nickel-Raney and acid treated Nickel-Raney catal... The direct reductive amination of 2,5-diformylfuran (DFF) with ammonia to 2,5-bis(aminomethyl)furan (BAF) was demonstrated, for the first time, over the commercial type Nickel-Raney and acid treated Nickel-Raney catalysts. The effects of reaction parameters such as reaction medium, temperature and hydrogen pressure were described. The acid treated Nickel-Raney catalyst exhibited the highest BAF yield in the THF-water mixed reaction medium. The relatively higher Ni0 species composition and larger surface area of the acid treated Nickel-Raney catalyst with specific reaction conditions contributed greatly to the BAF formation. The oligomeric species, such as furanic imine trimers and tetramers confirmed by MALDI-MS analysis were presented as the intermediates of DFF reductive amination. 展开更多
关键词 Reductive Amination Primary Amine 2 5-Bis(Aminomethyl)Furan 5-Diformylfuran NICKEL RANEY Catalyst
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TIMP-1 and its potential diagnostic and prognostic value in pulmonary diseases
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作者 Sultan Almuntashiri Abdullah Alhumaid +5 位作者 Yin Zhu yohan han Saugata Dutta Ohmed Khilji Duo Zhang Xiaoyun Wang 《Chinese Medical Journal Pulmonary and Critical Care Medicine》 2023年第2期67-76,共10页
Tissue inhibitors of metalloproteases(TIMPs)have caught the attention of many scientists due to their role in various physiological and pathological processes.TIMP-1,2,3,and 4 are known members of the TIMPs family.TIM... Tissue inhibitors of metalloproteases(TIMPs)have caught the attention of many scientists due to their role in various physiological and pathological processes.TIMP-1,2,3,and 4 are known members of the TIMPs family.TIMPs exert their biological effects by,but are not limited to,inhibiting the activity of metalloproteases(MMPs).The balance between MMPs and TIMPs is critical for maintaining homeostasis of the extracellular matrix(ECM),while the imbalance between MMPs and TIMPs can lead to pathological changes,such as cancer.In this re-view,we summarized the current knowledge of TIMP-1 in several pulmonary diseases namely,acute lung injury(ALI)/acute respiratory distress syndrome(ARDS),pneumonia,asthma,chronic obstructive pulmonary disease(COPD),cystic fibrosis,and pulmonary fibrosis.Considering the potential of TIMP-1 serving as a non-invasive di-agnostic and/or prognostic biomarker,we also reviewed the circulating TIMP-1 levels in translational and clinical studies. 展开更多
关键词 METALLOPROTEASES Extracellular matrix Chronic obstructive pulmonary disease Idiopathic pulmonary fibrosis Cystic fibrosis Lung injury
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