Asymmetric Formal Synthesis of (+)-Lactacystin

被引:6
作者
Sridhar, Chirumarry [1 ]
Vijaykumar, Bodduri V. D. [1 ,2 ]
Radhika, Laghuvarapu [1 ]
Shin, Dong-Soo [2 ]
Chandrasekhar, Srivari [1 ]
机构
[1] Indian Inst Chem Technol, Div Nat Prod Chem, Hyderabad 500007, Andhra Pradesh, India
[2] Changwon Natl Univ, Dept Chem, Chang Won 641773, GN, South Korea
基金
新加坡国家研究基金会;
关键词
Natural products; Lactams; Asymmetric synthesis; Epoxidation; Chiral resolution; Palladium; ENANTIOSELECTIVE TOTAL SYNTHESES; PROTEASOME INHIBITOR; MICROBIAL METABOLITE; RADICAL CYCLIZATION; EFFICIENT SYNTHESIS; BETA-LACTONE; LACTACYSTIN; INTERMEDIATE; ROUTE; DEGRADATION;
D O I
10.1002/ejoc.201402700
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A formal synthesis of (+)-lactacystin was achieved from commercially available isobutyraldehyde and ethyl acrylate. A Baylis-Hillman reaction, an intermolecular nucleophilic displacement under Mitsunobu conditions, a Sharpless asymmetric epoxidation, a palladium(0)-catalyzed syn-selective ring opening of an epoxide by treatment with an azide, a one-pot azide reductive lactamization, and a ruthenium-catayzed oxidation were employed as the key steps.
引用
收藏
页码:6707 / 6712
页数:6
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