Carbocation rearrangements in aspernomine biosynthesis

被引:10
作者
Ho, Gregory A. [1 ]
Nouri, Dustin H. [1 ]
Tantillo, Dean J. [1 ]
机构
[1] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA
基金
美国国家科学基金会;
关键词
ASPERGILLUS-NOMIUS; HARTREE-FOCK; DENSITY; SCLEROTIA; PATH;
D O I
10.1016/j.tetlet.2009.01.098
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Quantum chemical calculations (B3LYP/6-31G(d)) on carbocation rearrangements that are proposed to occur in the biosynthesis of aspernomine are described. Based on these calculations, a pathway involving a concerted but asynchronous [4+2] cycloaddition that avoids the formation of a secondary carbocation is proposed for small model systems. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1578 / 1581
页数:4
相关论文
共 14 条
[1]   A NEW MIXING OF HARTREE-FOCK AND LOCAL DENSITY-FUNCTIONAL THEORIES [J].
BECKE, AD .
JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (02) :1372-1377
[2]   DENSITY-FUNCTIONAL THERMOCHEMISTRY .3. THE ROLE OF EXACT EXCHANGE [J].
BECKE, AD .
JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (07) :5648-5652
[3]  
Frisch M.J., 2003, Gaussian03
[4]  
revision C.03 ed
[5]   THE PATH OF CHEMICAL-REACTIONS - THE IRC APPROACH [J].
FUKUI, K .
ACCOUNTS OF CHEMICAL RESEARCH, 1981, 14 (12) :363-368
[6]   NOMININE - A NEW INSECTICIDAL INDOLE DITERPENE FROM THE SCLEROTIA OF ASPERGILLUS-NOMIUS [J].
GLOER, JB ;
RINDERKNECHT, BL ;
WICKLOW, DT ;
DOWD, PF .
JOURNAL OF ORGANIC CHEMISTRY, 1989, 54 (11) :2530-2532
[7]   REACTION-PATH FOLLOWING IN MASS-WEIGHTED INTERNAL COORDINATES [J].
GONZALEZ, C ;
SCHLEGEL, HB .
JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (14) :5523-5527
[8]   DEVELOPMENT OF THE COLLE-SALVETTI CORRELATION-ENERGY FORMULA INTO A FUNCTIONAL OF THE ELECTRON-DENSITY [J].
LEE, CT ;
YANG, WT ;
PARR, RG .
PHYSICAL REVIEW B, 1988, 37 (02) :785-789
[9]   Novel rearrangement of a 2-aryl-3-alkyl-3H-indol-3-ol to a 1,4,5,6-tetrahydro-2,6-methano-1-benzazocin-3(2H)-one with implications for the biosynthesis of aspernomine [J].
Liu, YH ;
McWhorter, WW ;
Hadden, CE .
ORGANIC LETTERS, 2003, 5 (03) :333-335
[10]  
MULLER N, 2000, BALL STICK V 3 7 6 M