硫化氢(H 2 S)的资源化利用是能源化工领域的一个重要且具有发展前景的课题。我们集团以前通过 H 2 S 转化开发的产品是硫或硫醇酸。转化H 2 S的替代方法仍然是可取的。在此,我们开发了一种绿色温和的方法来转化 H 2在叔胺官能化的质子离子液体 (PIL) 中,通过与环氧化物的加成反应将 S 转化为硫醇。反应动力学、底物范围和再生实验都已被探索。在 30°C 下通过催化负载 PIL 实现了底物的几乎定量转化。水萃取用于从反应系统中回收催化剂。据信,优异的结果,加上其操作简单性和连续重复使用催化剂的能力,使这种新方法对环境无害且具有成本效益。H 2 S 资源方法的普遍性使其具有在工业规模上应用的潜力。
The present invention relates to peptide conjugates of cytotoxins such as topoisomerase I inhibitors which are useful for the treatment of diseases such as cancer.
本发明涉及诸如拓扑异构酶I抑制剂之类的细胞毒素的肽偶联物,用于治疗诸如癌症之类的疾病。
Process for producing 2-benzoyloxyacetaldehyde derivative
申请人:Nishikawa Kazuyoshi
公开号:US20050234246A1
公开(公告)日:2005-10-20
A process produces a 2-benzoyloxyacetaldehyde derivative represented by following Formula (3):
wherein R
1
and R
2
may be the same as or different from each other and are each a hydrocarbon group, wherein R
1
and R
2
may be combined to form a ring with the adjacent oxygen-carbon-oxygen bond, and wherein the benzene ring in the formula may be substituted, by allowing a halogenated acetaldehyde acetal derivative represented by following Formula (1):
wherein R
1
and R
2
are as defined above; and X represents a halogen atom, to react with a benzoate represented by following Formula (2):
wherein M represents an alkali metal atom and wherein the benzene ring in the formula may be substituted, in the presence of an alkali-metal halide.
[EN] OLIGONUCLEOTIDE COMPOSITIONS AND METHODS THEREOF<br/>[FR] COMPOSITIONS D'OLIGONUCLÉOTIDES ET PROCÉDÉS ASSOCIÉS
申请人:WAVE LIFE SCIENCES LTD
公开号:WO2021237223A1
公开(公告)日:2021-11-25
The present disclosure provides modified oligonucleotides and compositions and methods thereof. In some embodiments, provided technologies comprise modified sugars and/or modified internucleotidic linkages. In some embodiments, the present disclosure provides technologies for preparing modified oligonucleotides. In some embodiments, the present disclosure provides chirally controlled oligonucleotide compositions and methods for their preparation and uses.
PROCESS FOR PRODUCING 2-BENZOYLOXYACETALDEHYDE DERIVATIVE
申请人:NISHIKAWA Kazuyoshi
公开号:US20090192321A1
公开(公告)日:2009-07-30
A process produces a 2-benzoyloxyacetaldehyde derivative represented by following Formula (3):
wherein R
1
and R
2
may be the same as or different from each other and are each a hydrocarbon group, wherein R
1
and R
2
may be combined to form a ring with the adjacent oxygen-carbon-oxygen bond, and wherein the benzene ring in the formula may be substituted, by allowing a halogenated acetaldehyde acetal derivative represented by following Formula (1):
wherein R
1
and R
2
are as defined above; and X represents a halogen atom, to react with a benzoate represented by following Formula (2):
wherein M represents an alkali metal atom and wherein the benzene ring in the formula may be substituted, in the presence of an alkali-metal halide.
[EN] PROCESS FOR PREPARING A CONJUGATE LINKING MOIETY<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UNE FRACTION DE LIAISON CONJUGUÉE
申请人:CYBREXA 2 INC
公开号:WO2022150596A1
公开(公告)日:2022-07-14
The present invention relates to processes for preparing linkers that are useful in the conjugation of therapeutic molecules (e.g., cytotoxic agents) with targeting moieties (e.g., proteins, peptides, antibodies, nanoparticles, nucleic acids). During said processes lipases like lipase B from Candida antarctica were used for enantioselective resolution of (S,S)-2-benzylthiocyclohexanol or (S,S)-2-benzylthiocycloheptanol in presence of acylating agent which are reduced for deprotection to yield (S,S)-2-mercaptocyclohexanol or (S,S)-2-mercaptocyclopentanol which can then be used for linking therapeutic with targeting moieties.