一种新型的基于吡啶基脲的大环化合物已被合成并充分表征,包括单晶 X 射线结构测定。合成方法首先涉及苄氧羰基氨基丙基-3-异氰酸酯与2-[(2-氨基吡啶-3-基)氧基]乙酸叔丁酯反应,产生偶联产物。在胺和酸部分脱保护并在 1-乙基-3-(3-二甲氨基丙基)碳二亚胺 (EDC) 存在下进行偶联后,形成大环。化合物的结构经质谱和核磁共振谱确证。大环的 X 射线晶体结构显示出如预期的非结合构象,在尿素 NH 和吡啶基氮之间具有分子内氢键。
一种新型的基于吡啶基脲的大环化合物已被合成并充分表征,包括单晶 X 射线结构测定。合成方法首先涉及苄氧羰基氨基丙基-3-异氰酸酯与2-[(2-氨基吡啶-3-基)氧基]乙酸叔丁酯反应,产生偶联产物。在胺和酸部分脱保护并在 1-乙基-3-(3-二甲氨基丙基)碳二亚胺 (EDC) 存在下进行偶联后,形成大环。化合物的结构经质谱和核磁共振谱确证。大环的 X 射线晶体结构显示出如预期的非结合构象,在尿素 NH 和吡啶基氮之间具有分子内氢键。
[EN] BIFUNCTIONAL DERIVATIVES OF POLYETHYLENE GLYCOL, THEIR PREPARATION AND USE<br/>[FR] DERIVES BIFONCTIONNELS DE POLYETHYLENEGLYCOL: PREPARATION ET UTILISATION
申请人:UNIV DEGLI STUDI TRIESTE
公开号:WO2005123139A1
公开(公告)日:2005-12-29
The patent describes homo- or hetero-bifunctional derivatives of polyethylene glycol (PEG) obtained by selectively modifying the hydroxyl end groups of commercial PEGs of different molecular weights with reactive bifunctional molecules. The synthesis process comprises steps involving sequential derivatization of PEG terminal hydroxyl groups with a bifunctional compound, purification of the bifunctional PEG obtained and/or protection of its functional groups with possible selective removal of terminal protections. The bifunctional PEGs (biPEG) obtained are usable as carriers and/or stabilizers for substances used for diagnostic, prophylactic and therapeutic purposes, conjugated to the same biocompatible biPEG support. The bifunctionalized PEG derivatives can also be used in supported synthesis processes.
BIFUNCTIONAL DERIVATIVES OF POLYETHYLENE GLYCOL, THEIR PREPARATION AND USE
申请人:Universita'Degli Studi di Trieste
公开号:EP1776143B1
公开(公告)日:2008-01-02
Bifunctional Derivatives of Polyethylene Glycol, Their Preparation and Use
申请人:Bonora Gian Maria
公开号:US20080280998A1
公开(公告)日:2008-11-13
The patent describes homo- or hetero-bifunctional derivatives of polyethylene glycol (PEG) obtained by selectively modifying the hydroxyl end groups of commercial PEGs of different molecular weights with reactive bifunctional molecules. The synthesis process comprises steps involving sequential derivatization of PEG terminal hydroxyl groups with a bifunctional compound, purification of the bifunctional PEG obtained and/or protection of its functional groups with possible selective removal of terminal protections. The bifunctional PEGs (biPEG) obtained are usable as carriers and/or stabilizers for substances used for diagnostic, prophylactic and therapeutic purposes, conjugated to the same biocompatible biPEG support. The bifunctionalized PEG derivatives can also be used in supported synthesis processes.
Synthesis, Characterisation and Crystal Structure of a Novel Pyridyl Urea Macrocycle
作者:Shagufta Perveen、Jeremy D. Kilburn、Areej M. Al-Taweel、Mark E. Light
DOI:10.3184/174751916x14792878808106
日期:2016.12
A novel pyridyl urea based macrocycle has been synthesised and fully characterised including a single crystal X-ray structure determination. The synthetic approach first involves the reaction of benzyloxycarbonylaminopropyl-3-isocyanate with t-butyl 2-[(2-aminopyridin-3-yl)oxy]acetate resulting in a coupling product. After deprotection of the amine and acid moieties and coupling subsequent coupling
一种新型的基于吡啶基脲的大环化合物已被合成并充分表征,包括单晶 X 射线结构测定。合成方法首先涉及苄氧羰基氨基丙基-3-异氰酸酯与2-[(2-氨基吡啶-3-基)氧基]乙酸叔丁酯反应,产生偶联产物。在胺和酸部分脱保护并在 1-乙基-3-(3-二甲氨基丙基)碳二亚胺 (EDC) 存在下进行偶联后,形成大环。化合物的结构经质谱和核磁共振谱确证。大环的 X 射线晶体结构显示出如预期的非结合构象,在尿素 NH 和吡啶基氮之间具有分子内氢键。