Spiroleucettadine: synthetic studies and investigations towards structural revision

被引:22
作者
Aberle, Nicholas
Ovenden, Simon P. B.
Lessene, Guillaume
Watson, Keith G.
Smith, Brian J.
机构
[1] Royal Melbourne Hosp, Walter & Eliza Hall Inst Med Res, Parkville, Vic 3050, Australia
[2] Univ Melbourne, Dept Med Biol, Parkville, Vic 3010, Australia
[3] Def Sci & Technol Org, Fishermans Bend, Vic 3207, Australia
关键词
spiroleucettadine; density functional theory; oxidative cyclisations; C-13 NMR predictions; biosynthesis;
D O I
10.1016/j.tetlet.2007.01.088
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Synthetic efforts towards spiroleucettadine are described, including the enantioselective synthesis of the presumed biosynthetic precursor. High level density functional theory calculations were used to predict the C-13 NMR shifts of possible alternative structures and, along with a re-evaluation of the available NMR data, allow the proposal of revised structures for this spirocyclic alkaloid. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2199 / 2203
页数:5
相关论文
共 19 条
[1]   A concise total synthesis of naamidine A [J].
Aberle, NS ;
Lessene, G ;
Watson, KG .
ORGANIC LETTERS, 2006, 8 (03) :419-421
[2]   Synthetic studies toward spiroleucettadine [J].
Chang, Jonah J. ;
Chan, Bryan ;
Ciufolini, Marco A. .
TETRAHEDRON LETTERS, 2006, 47 (21) :3599-3601
[3]   DESIGN AND SYNTHESIS OF A CONFORMATIONALLY RESTRICTED CYSTEINE PROTEASE INHIBITOR [J].
CHENG, HM ;
KEITZ, P ;
JONES, JB .
JOURNAL OF ORGANIC CHEMISTRY, 1994, 59 (25) :7671-7676
[4]   Comparison of different theory models and basis sets in the calculation of 13C NMR chemical shifts of natural products [J].
Cimino, P ;
Gomez-Paloma, L ;
Duca, D ;
Riccio, R ;
Bifulco, G .
MAGNETIC RESONANCE IN CHEMISTRY, 2004, 42 :S26-S33
[5]   Uniquely modified imidazole alkaloids from a calcareous Leucetta sponge [J].
Edrada, RA ;
Stessman, CC ;
Crews, P .
JOURNAL OF NATURAL PRODUCTS, 2003, 66 (07) :939-942
[6]   Computed C-13 NMR chemical shifts via empirically scaled GIAO shieldings and molecular mechanics geometries. Conformation and configuration from C-13 shifts [J].
Forsyth, DA ;
Sebag, AB .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (40) :9483-9494
[7]   GAS-PHASE C-13 CHEMICAL-SHIFTS IN THE ZERO-PRESSURE LIMIT - REFINEMENTS TO THE ABSOLUTE SHIELDING SCALE FOR C-13 [J].
JAMESON, AK ;
JAMESON, CJ .
CHEMICAL PHYSICS LETTERS, 1987, 134 (05) :461-466
[8]   ENANTIORETENTIVE ALKYLATION OF ACYCLIC AMINO-ACIDS [J].
KARADY, S ;
AMATO, JS ;
WEINSTOCK, LM .
TETRAHEDRON LETTERS, 1984, 25 (39) :4337-4340
[9]   Studies directed toward the synthesis of the guanidine alkaloid, spiroleucettadine: some observations at the level of structure [J].
Li, CM ;
Danishefsky, SJ .
TETRAHEDRON LETTERS, 2006, 47 (03) :385-387
[10]   GIAO/DFT evaluation of 13C NMR chemical shifts of selected acetals based on DFT optimized geometries [J].
Migda, W ;
Rys, B .
MAGNETIC RESONANCE IN CHEMISTRY, 2004, 42 (05) :459-466