A topical skin composition containing a dipeptide compound represented by formula (1) or a salt of the dipeptide:
1
wherein R
1
represents a hydrogen atom, an alkyl group, an alkanoyl group, or —CH(R
6
)COOR
7
(wherein R
6
represents a hydrogen atom or a lower alkyl group, and R
7
represents a hydrogen atom, a lower alkyl group, a lower alkenyl group, or an aralkyl group);
R
2
represents a hydrogen atom or an alkyl group which may have a substituent;
R
3
represents a lower alkyl group or a phenyl group;
R
4
represents a hydrogen atom or a lower alkyl group, and may form a heterocyclic ring together with R
5
and an adjacent nitrogen atom;
R
5
represents a hydrogen atom, an alkyl group which may have a substituent, or an aralkyl group which may have a substituent, and may form the heterocyclic ring together with R
4
;
X represents —COOR
8
(wherein R
8
represents a hydrogen atom, a lower alkyl group, a lower alkenyl group, or an aralkyl group) or —SO
3
H; and
n is an integer of 0-4; and a pharmaceutically acceptable carrier therefor.
Method for producing alpha-L-aspartyl-L-phenylalanine methyl ester hydrochloride
申请人:AJINOMOTO CO., INC.
公开号:EP0300450A2
公开(公告)日:1989-01-25
A method for producing α-L-aspartyl-L-phenylalanine dimethyl ester, which comprises reacting 3-benzyl-6-carboxymethyl -2,5-diketopiperazine or methyl ester thereof in a methanolic solvent substantially free from water in the presence of a strong acid.
Carbonic anhydrase activators for enhancig learning and memory
申请人:Blanchette Rockefeller Neurosciences Institute
公开号:EP1935414A2
公开(公告)日:2008-06-25
The invention provides activator compounds for improving attentive cognition comprising administering a compound that potentiates intraneuronal carbonic anhydrase activity thereby improving establishment of a theta rhythm.
The invention relates to a method for preparing a purified peptide deformylase, comprising contacting a liquid which comprises a peptide deformylase containing an ionic tag and at least one other enzyme with an ion exchange material to which material the ionic tag binds by ionic interaction and separating the other enzyme from said peptide deformylase. The invention further provides a peptide deformylase comprising an ionic tag, a vector comprising a nucleic acid sequence encoding such a peptide deformylase and a cell comprising such a vector.
Methods and systems for determining autism spectrum disorder risk
申请人:Laboratory Corporation of America Holdings
公开号:US10041932B2
公开(公告)日:2018-08-07
In certain embodiments, the invention stems from the discovery that analysis of population distribution curves of metabolite levels in blood can be used to facilitate predicting risk of autism spectrum disorder (ASD) and/or to differentiate between ASD and non-ASD developmental delay (DD) in a subject. In certain aspects, information from assessment of the presence, absence, and/or direction (upper or lower) of a tail effect in a metabolite distribution curve is utilized to predict risk of ASD and/or to differentiate between ASD and DD.