109579-10-4Relevant articles and documents
An efficient approach to trans-4-hydroxy-5-substituted 2-pyrrolidinones through a stereoselective tandem Barbier process: divergent syntheses of (3R,4S)-statines, (+)-preussin and (?)-hapalosin
Si, Chang-Mei,Shao, Lu-Ping,Mao, Zhuo-Ya,Zhou, Wen,Wei, Bang-Guo
, p. 649 - 661 (2017/01/25)
A diastereoselective approach to trans-4-hydroxy-5-substituted 2-pyrrolidinones 1 (P1 = TBS, P2 = H) has been developed through a stereoselective tandem Barbier process of (R,SRS)-8 with alkyl and aryl bromide. The stereochemistry at the C-5 stereogenic center of the trans-4-hydroxy-5-substituted 2-pyrrolidinones was solely controlled by α-alkoxy substitution. This effective approach was successfully used to prepare a variety of substituted (3R,4S)-statines 2. In addition, two bioactive natural products of (+)-preussin 4 and hapalosin 5 were effectively synthesized through this stereoselective tandem Barbier process.
A facile approach to trans-4,5-pyrrolidine lactam and application in the synthesis of nemonapride and streptopyrrolidine
Huang, Wei,Ma, Jing-Yi,Yuan, Mu,Xu, Long-Fei,Wei, Bang-Guo
, p. 7829 - 7837 (2011/10/12)
An efficient approach to trans-4-hydroxylpyrrolidine lactams 1 starting from amino acid is described. The utility of this method has been demonstrated in the synthesis of antipsychotic nemonapride 3 and antiangiogenic streptopyrrolidine 4. Compared four s
PYRROLIDIN-3-YL COMPOUNDS USEFUL AS BETA-SECRETASE INHIBITORS FOR THE TREATMENT OF ALZHEIMER'S DISEASE
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Page/Page column 26-27, (2010/02/15)
The present invention is directed to pyrrolidin-3-yl derivative compounds which are inhibitors of the beta-secretase enzyme and that are useful in the treatment of diseases in which the beta-secretase enzyme is involved, such as Alzheimer's disease. The i
Design of potential new HIV protease inhibitors: Enantioconvergent synthesis of new pyrrolidin-3-ol, and pyrrolidin-3-one peptide conjugates
Courcambeck,Bihel,De Michelis,Quelever,Kraus
, p. 1421 - 1430 (2007/10/03)
Novel potential HIV protease inhibitors are obtained by an enantioconvergent synthesis of mimicking Phe-Pro dipeptides, achieved through the coupling between Boc(L)Phe or Boc(L)Tyr and both enantiomers of syn-2-benzylpyrrolidin-3-ol and their correspondin
A novel Wittig reaction of oxazolidinones: Stereospecific synthesis of N-BOC-(3S,4S)-statine and N-BOC-(3S,4S)-AHPPA
Vidyasagar Reddy,Venkat Rao,Iyengar
, p. 775 - 776 (2007/10/03)
Stereospecific synthesis of N-BOC-(3S,4S)-Statine and N-BOC-(3S,4S)- AHPPA is achieved via a novel Wittig reaction of oxazolidinones in an efficient manner.
Hydroxyoxazolidines as alpha-aminoacetaldehye equivalents: novel inhibitors of calpain.
Peet,Kim,Marquart,Angelastro,Nieduzak,White,Friedrich,Flynn,Webster,Vaz,Linnik,Koehl,Mehdi,Bey,Emary,Hwang
, p. 2365 - 2370 (2007/10/03)
The synthesis of [1-[(5-hydroxy-4-(phenylmethyl)-3-oxazolidinyl)carbonyl]-2-ethylpropy lcarbamic acid phenylmethyl ester (2; MDL 104,903), a potent inhibitor of calpain, is described. Synthesis of related compounds, which offer insights into the mechanism of action for 2, are also described, as is an O-acetyl prodrug derivative of 2.
An improved procedure to homochiral cyclic statines
Ma, Dawei,Ma, Jingyuan,Ding, Wenli,Dai, Lixin
, p. 2365 - 2370 (2007/10/03)
Chiral tetramic acids were prepared in high yields by the reaction of N-protected amino acids with Meldrum's acid employing DCC as a carboxyl activating agent. Reduction or hydrogenation of these tetramic acids produced homochiral cyclic statines.
A novel stereoselective synthesis of enantiomerically pure antifungal agent, (+)-preussin
Yoda, Hidemi,Yamazaki, Hiroyasu,Takabe, Kunihiko
, p. 373 - 374 (2007/10/03)
An efficient and novel process is described for the asymmetric synthesis of (2S, 3S, 5R)-1-methyl-5-nonyl-2-(phenylmethyl)-3-pyrrolidinol, (+)-preussin employing reductive deoxygenation of a functionalized quaternary α-hydroxy N-Boc pyrrolidine obtained by stereocontrolled elaboration of tri-O-benzyl-β-D-arabinofuranose. The synthetic strategy involves no separation of stereoisomers through the entire sequence.
Stereospecific Synthesis of N-Protected Statine and Its Analogues via Chiral Tetramic Acid
Jouin, Patrick,Castro, Bertrand,Nisato, Dino
, p. 1177 - 1182 (2007/10/02)
The condensation of a chiral N-protected amino acid with Meldrum's acid in the presence of isopropenyl chloroformate (IPCF) and of 4-N,N-dimethylaminopyridine (DMAP) has been examined.The cyclisation of the reaction product, by heating in an organic solve