通过碱介导的重排将多种芳族和脂族异羟肟酸转化为相应的伯胺。这种重新排列可以少于1个当量进行。无需外部试剂的热条件下,在极性溶剂中分离K 2 CO 3。该重排具有几个特征,包括不需要用于促进重排的外部活化剂,少于一当量的碱足以进行该反应,以及其中仅产生二氧化碳作为副产物的清洁反应。提出了通过异氰酸酯中间体的自增长机理,并通过实验支持了基本的反应步骤,即链增长反应。
NOVEL DECANOIC ACID DERIVATIVES AND FLAVORING COMPOSITIONS
申请人:T. HASEGAWA CO., LTD.
公开号:US20140377434A1
公开(公告)日:2014-12-25
This invention relates to alkyl 5-acyloxydecanoate having formula (1) as follows:
wherein R
1
denotes a hydrogen atom or an alkyl group having one to four carbon atoms, R
2
denotes an alkyl group having one to four carbon atoms, with the proviso that the case where R
1
is a methyl group and R
2
is a methyl group or an ethyl group is excluded, which is capable of giving to food products or the like a characteristic flavor, or a sensory impression, of milk, fat or cream, and to the use of the same in flavoring compositions.
METHODS FOR ENHANCING HEMATOPOIETIC STEM/PROGENITOR CELL ENGRAFTMENT
申请人:CHILDREN'S MEDICAL CENTER CORPORATION
公开号:US20150246075A1
公开(公告)日:2015-09-03
Described herein are methods for enhancing engraftment of hematopoietic stem and progenitor cells using compounds identified using a zebrafish model of hematopoietic cell engraftment. The compounds can be used to treat hematopoietic stem cells ex vivo prior to transplantation of the cells. Alternatively, the compounds can be administered to an individual undergoing cell transplantation.