254452-95-4Relevant academic research and scientific papers
Enantioselective addition of diketene to aldehydes promoted by chiral Schiff base-titanium alkoxide complex. Application to asymmetric synthesis of potential inhibitors of HMG coenzyme reductase
Hayashi, Masahiko,Yoshimoto, Kazuya,Hirata, Naohito,Tanaka, Kiyoshi,Oguni, Nobuki,Harada, Katsumasa,Matsushita, Akio,Kawachi, Yasuhiro,Sasaki, Hiroshi
, p. 241 - 246 (2007/10/03)
Highly enantioselective addition of diketene to aldehydes was achieved by using novel Schiff base-titanium alkoxide complexes. Up to 92% ee of 5-hydroxy-3-oxoesters was obtained. This procedure provides an efficient method for the asymmetric synthesis of potential inhibitors of HMG coenzyme reductase.
First systematic chiral syntheses of two pairs of enantiomers with 3,5-dihydroxyheptenoic acid chain, associated with a potent synthetic statin NK-104
Suzuki, Mikio,Yanagawa, Yoshinobu,Iwasaki, Hiroshi,Kanda, Hiroyasu,Yanagihara, Kazufumi,Matsumoto, Hiroo,Ohara, Yoshio,Yazaki, Yukari,Sakoda, Ryozo
, p. 2977 - 2982 (2007/10/03)
First systematic chiral syntheses of two pairs of enantiomers with 3,5-dihydroxyheptenoic acid chain, associated with a potent synthetic statin NK-104 are reported. A pair of syn diol isomers (NK-104 and its enantiomer) was obtained efficiently by diastereomeric resolution. The synthesis of a pair of anti diol isomers (3-epimer and 5-epimer) was accomplished effectively by the asymmetric aldol reaction followed by anti stereoselective reduction as key steps. Their purity determinations were effected by chiral HPLC analysis.
