A compound represented by the following General Formula (1):
where R
1
represents a protective group for a hydroxyl group or a hydrogen atom, and R
2
represents a methyl group or an ethyl group.
由以下一般式(1)表示的化合物:
其中R1代表羟基或氢原子的保护基团,R2代表甲基或乙基基团。
A Direct Catalytic Asymmetric Aldol Reaction of α-Sulfanyl Lactones: Efficient Synthesis of SPT Inhibitors
Softly does it: The title reaction, catalyzed by a AgPF6/(R)‐biphep‐type ligand/DBU complex, is described (see scheme). This protocol gives efficient access to syn‐configured α‐sulfanyl‐β‐hydroxy lactones in a highly enantioselective manner. In one particular case, the sulfide group was stereospecifically replaced with a hydroxy group to afford an enantioenriched tertiary alcohol, which upon further
Direct Catalytic Asymmetric Mannich-Type Reaction of α-Sulfanyl Lactones
作者:Sho Takechi、Naoya Kumagai、Masakatsu Shibasaki
DOI:10.1021/ol4008734
日期:2013.6.7
CatalyticasymmetricMannich-typereactions of α-sulfanyl lactones to aldimines were promoted by a chiral Ag complex/DBU binary catalyst. The reaction proceeded in a syn-selective manner in high enantioselectivity. Alkylative activation of the sulfide of the Mannich adduct allowed for the formation of trisubstituted aziridines.
A compound represented by the following General Formula (1):
where R1 represents a protective group for a hydroxyl group or a hydrogen atom, and R2 represents a methyl group or an ethyl group.