60256-21-5Relevant articles and documents
A convenient method for the synthesis of (S)-N-boc-3- hydroxyadamantylglycine: A key intermediate of saxagliptin
Wang, Anmin,Deng, Yu,Pan, Xinmei,Chen, Yingjie,Tao, Zhu,Liang, Dinghua,Hu, Xiangnan
, p. 627 - 631 (2014/07/21)
(S)-N-Boc-3-Hydroxyadamantylglycine is a key intermediate of saxagliptin. It was synthesized from 1- adamantanecarboxylic acid to afford 1-acetyladamantane (2), which was converted into 2-(1-adamantyl)-2-oxoacetic acid (3) through oxidation, and then into 1-adamantyl-2-hydroxyimino acetic acid (4) followed by treatment of hydroxylamine hydrochloride, then 4 was reducted and Boc-protected to give N-Boc-adamantylglycine (5), which was oxidized with KMnO4 and treated with a chiral base. Utilizing this route, (S)-N-Boc-3- Hydroxyadamantylglycine was prepared. This work is to elaborate a convenient route to synthesize (S)-N-Boc-3-Hydroxyadamantylglycine and provide a new idea for the synthesis of saxagliptin.
Synthesis and immunostimulating properties of novel adamant-1-yl tripeptides
Ribic, Rosana,Habjanec, Lidija,Vranesic, Branka,Frkanec, Ruza,Tomic, Srdanka
experimental part, p. 777 - 788 (2012/07/27)
The aim of this work was to prepare L- and D-(adamant-1-yl)-Gly-L-Ala-D- isoGln peptides in order to study their adjuvant (immunostimulating) activities. Adjuvant activity of adamant-1-yl tripeptides was tested in the mouse model using ovalbumin as an ant
PROCESS FOR THE REDUCTIVE AMINATION OF α-KETO CARBOXYLIC ACIDS
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Page/Page column 8, (2012/03/26)
The invention refers to a process for the reductive amination of α-keto carboxylic acids catalyzed by transition metal containing compounds.
Tumor-cell-targeted methionine-enkephalin analogues containing unnatural amino acids: Design, synthesis, and in vitro antitumor activity
Horvat, ?tefica,Mlinari?-Majerski, Kata,Glava?-Obrovac, Ljubica,Jakas, Andreja,Veljkovi?, Jelena,Marczi, Sa?ka,Kragol, Goran,Ro??i?, Maja,Matkovi?, Marija,Milosti?-Srb, Andrea
, p. 3136 - 3142 (2007/10/03)
A series of new peptides (8-25) containing different unnatural amino acids of the adamantane type (1-6), was synthesized. Possible cytotoxic activity on human cervical adenocarcinoma (HeLa), larynx carcinoma (HEp-2), colon carcinomas (HT-29, Caco-2), poorly differentiated cells from lymph node metastasis of colon carcinoma (SW-620), mammary gland adenocarcinoma (MCF-7), and melanoma (HBL) cells were tested by the MTT assay. The results were compared with the effect of methionine-enkephalin (Tyr-Gly-Gly-Phe-Met, or opioid growth factor, OGF), and its shorter N-terminal fragments. Peptide analogues containing Cαα-dialkylated glycine (Aaa1, 1) or Cα-alkylated glycine (Aaa2, 2) amino acid residues showed antitumor activity against melanoma, larynx carcinoma, colon carcinomas, and colon metastasis cell lines in vitro. The pentapeptide Tyr-(R,S)-Aaa2-Gly-Phe-Met (18) was the most effective analogue especially against the most antitumor drug-resistant cell lines HEp-2 and SW-620. Apoptosis as a mode of cell death was confirmed in these tumor cells after exposure to pentapeptide 18.
Preparation of (R)-(1-adamantyl)glycine and (R)-2-(1-adamantyl)-2-aminoethanol: A combination of cobalt-mediated β-ketoester alkylation and enzyme-based aminoalcohol resolution
Clariana, Jaume,Garcia-Granda, Santiago,Gotor, Vicente,Gutierrez-Fernandez, Angel,Luna, Amparo,Moreno-Maas, Marcial,Vallribera, Adelina
, p. 4549 - 4557 (2007/10/03)
Alkylation of the cobalt(II) complex of ethyl acetoacetate with 1-bromoadamantane affords ethyl 2-(1-adamantyl)acetoacetate, which was converted into rac-(1-adamantyl)glycine 1 and rac-2-(1-adamantyl)-2-aminoethanol 7. This was separated into enantiomers by means of vinyl acetate in the presence of Pseudomonas cepacea. Configuration R was assigned to the enantiomerically pure aminoalcohol (R)-7 on the basis of X-ray diffraction data. Further oxidation of N-protected aminoalcohol (R)-8 afforded enantiomerically pure amino acid (R)-1.
α-AMINO ACIDS IN THE ADAMANTANE SERIES. I. SYNTHESIS AND ENANTIOMERIC RESOLUTION OF 1-ADAMANTYLGLYCINE AND β-(1-ADAMANTYL)ALANINE
Krasutskii, P. A.,Semenova, I. G.,Novikova, M. I.,Yurchenko, A. G.,Tikhonov, V. P.,et al.
, p. 1327 - 1332 (2007/10/02)
1-Adamantylglycine and β-(1-adamantyl)alanine have been synthesized via the amination of α-haloacids.Enantiomeric resolution of these compounds was achieved by separation of the diastereomeric salts formed between their methyl esters and d-dibenzoyltartaric acid as well as with d-camphor-10-sulfonic acid.In order to determine the absolute configurations of these amino acids, they were converted to Schiff bases and diastereomeric tetradentate Ni2+ complexes were synthesized from these derivatives.