N,N-Dialkylcarboxamides react with halogens in the absence of water to form complexes which are likely to have an ionic structure with the Hlg(+) ion coordinated at the carbonyl oxygen atom. These products can be isolated as individual compounds. Complexes with bromine undergo further transformations to afford bis-dialkylamide hydrogen tribromide and the corresponding a-bromo amide. When the reaction is carried out in the presence of water, the products are only bis-dialkylamide hydrogen tribromides; here, the N-alkyl groups act as a source of protons.
A N-alkyl amide derivative is synthesized in one-step by reacting an olefin, nitrogen-containing compound and carbon monoxide with a catalyst comprising a rhodium-containing compound in the presence of water at a pressure of at least 500 psi and a temperature of at least 50.degree. C.
Multiple Noncovalent Bonding in Halogen Complexes with Oxygen Organics. I. Tertiary Amides
作者:Kyrill Yu. Suponitsky、N.I. Burakov、Alexander L. Kanibolotsky、Vasilii A. Mikhailov
DOI:10.1021/acs.jpca.6b02192
日期:2016.6.23
N′-diacetylpiperazine with halogens and interhalogens based on combination of different experimental methods and quantum chemical calculations. On the basis of conductometric and spectro-photometric experimental results, behavior of complexes in the acetonitrile solution was described. The iodine adduct with N,N′-diacetylpiperazine fully degrades into components. Adducts of interhalogens I–X (X = Cl or Br)
Compounds of formula (I)
wherein GH represent a radical derived from a growth hormone compound by removal of one hydrogen atom from the N-terminal amino group; X represents oxygen or two hydrogen atoms; Z represents a bond, alkylene, arylene, heteroarylene, —CH
2
—O—(CH
2
)
1-10
—, —CH
2
—O—(C
6
H
4
)—, or combinations thereof; and
Y represents a radical selected from
are provided together with methods for making said compounds. The compounds are useful in therapy.
A melanocortin receptor-specific compound of the general formula of structure I:
where X, R
1
, R
2a
, R
2b
, R
3
, R
4a
, R
4b
, R
5a
and R
5b
are as defined in the specification, which compound binds with high affinity to one or more melanocortin receptors and is optionally an agonist, an antagonist, an inverse agonist or an antagonist of an inverse agonist, and may be employed for treatment of one or melanocortin receptor-associated conditions or disorders, and methods for the use of the compounds of the invention.
Poly(Ethylene Glycol) Derivatives and Process For Their Coupling to Proteins
申请人:Dorwald Florencio Zaragoza
公开号:US20080274075A1
公开(公告)日:2008-11-06
Novel compounds, including PEGylated proteins of the formula, methods for preparing such compounds, methods of using such compounds, and other compositions and methods, are provided.