488835-81-0Relevant articles and documents
Dynamic kinetic resolution catalyzed by Ir axially chiral phosphine catalyst: Asymmetric synthesis of anti aromatic β-hydroxy-α-amino acid esters
Makino, Kazuishi,Hiroki, Yasuhiro,Hamada, Yasumasa
, p. 5784 - 5785 (2007/10/03)
The anti selective hydrogenation of α-amino-β-keto esters via dynamic kinetic resolution was achieved for the first time by using the iridium-MeOBIPHEP catalyst in asymmetric synthesis of anti aromatic β-hydroxy-α-amino acid esters with excellent diastereo- and enantioslectivities. Acetic acid as a solvent and sodium acetate as an additive affected dramatically the yield and the enantioselectivity, respectively. The product anti aromatic β-hydroxy-α-amino acid esters are useful for synthesis of pharmaceuticals and natural products. Copyright
Diastereoselective synthesis of all stereoisomers of β-methoxytyrosine, a component of papuamides
Okamoto, Naoki,Hara, Osamu,Makino, Kazuishi,Hamada, Yasumasa
, p. 9210 - 9215 (2007/10/03)
β-Methoxytyrosine (β-OMeTyr) is a stereoundefined component of papuamides A and B, novel cyclodepsipeptides, with anti-HIV and cytotoxic activities. For structural determination and total synthesis of papuamides, all stereoisomers of β-OMeTyr were stereos