The direct synthesis of 6-amino-6-deoxyaldonic acids as monomers for the preparation of polyhydroxylated nylon 6
摘要:
6-Azido-6-deoxy-D-galactitol and D-mannitol were obtained quantitatively via the reduction of the corresponding 6-azido-6deoxy-D-hexono-1,4-lactones, and 6-azido-6-deoxy-D-glucitol was obtained by the reduction of 6-azido-6-deoxyglucose in good yields. The reduction of monoazidodeoxyhexitols by catalytic hydrogenation gave the monoaminohexitol analogues in 95-98% yields. Oxidation of these afforded the corresponding 6-amino-6-deoxy-D-aldonic acids in moderate yields. Alternatively, saponification of 6-azido-6-deoxy-D-hexonolactones gave 6-azido-6-deoxyaldonic acid salts which, after reduction followed by neutralization, led to the expected compounds in 82-88% overall yields. (c) 2006 Elsevier Ltd. All rights reserved.
The direct synthesis of 6-amino-6-deoxyaldonic acids as monomers for the preparation of polyhydroxylated nylon 6
摘要:
6-Azido-6-deoxy-D-galactitol and D-mannitol were obtained quantitatively via the reduction of the corresponding 6-azido-6deoxy-D-hexono-1,4-lactones, and 6-azido-6-deoxy-D-glucitol was obtained by the reduction of 6-azido-6-deoxyglucose in good yields. The reduction of monoazidodeoxyhexitols by catalytic hydrogenation gave the monoaminohexitol analogues in 95-98% yields. Oxidation of these afforded the corresponding 6-amino-6-deoxy-D-aldonic acids in moderate yields. Alternatively, saponification of 6-azido-6-deoxy-D-hexonolactones gave 6-azido-6-deoxyaldonic acid salts which, after reduction followed by neutralization, led to the expected compounds in 82-88% overall yields. (c) 2006 Elsevier Ltd. All rights reserved.
Pseudomonas aeruginosa and Burkholderia ambifaria are two opportunistic bacteria and major infectious agents involved in infection of cystic fibrosis patients.
铜绿假单胞菌和安比法尔布氏杆菌是两种机会性细菌,是导致囊性纤维化患者感染的主要传染病原体。
The direct synthesis of 6-amino-6-deoxyaldonic acids as monomers for the preparation of polyhydroxylated nylon 6
6-Azido-6-deoxy-D-galactitol and D-mannitol were obtained quantitatively via the reduction of the corresponding 6-azido-6deoxy-D-hexono-1,4-lactones, and 6-azido-6-deoxy-D-glucitol was obtained by the reduction of 6-azido-6-deoxyglucose in good yields. The reduction of monoazidodeoxyhexitols by catalytic hydrogenation gave the monoaminohexitol analogues in 95-98% yields. Oxidation of these afforded the corresponding 6-amino-6-deoxy-D-aldonic acids in moderate yields. Alternatively, saponification of 6-azido-6-deoxy-D-hexonolactones gave 6-azido-6-deoxyaldonic acid salts which, after reduction followed by neutralization, led to the expected compounds in 82-88% overall yields. (c) 2006 Elsevier Ltd. All rights reserved.