Total syntheses of aplysin and debromoaplysin using a diastereoselective, sulfur mediated radical cyclisation strategy

被引:31
作者
Harrowven, DC [1 ]
Lucas, MC
Howes, PD
机构
[1] Univ Southampton, Dept Chem, Southampton SO17 1BJ, Hants, England
[2] Glaxo Wellcome Res & Dev Ltd, Med Res Ctr, Enzyme Med Chem 2, Stevenage SG1 2NY, Herts, England
关键词
terpenes and terpenoids; natural products; radicals and radical reactions; cyclisations; disulfides; oxygen heterocycles;
D O I
10.1016/S0040-4039(99)00768-6
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Total syntheses of two marine sesquiterpenes, aplysin 1 and debromoaplysin 2, are described. The key step involves a diastereoselective, sulfur mediated radical cyclisation of diene 5 to 7 which simultaneously creates the sterically demanding aplysin skeleton and establishes the relative configuration of the three contiguous stereogenic centres. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:4443 / 4444
页数:2
相关论文
共 25 条
[1]   STEREOCONTROLLED SYNTHESIS OF (+/-)-DEBROMOAPLYSIN, (+/-)-APLYSIN, (+/-)-DEBROMOAPLYSINOL, (+/-)-APLYSINOL, AND (+/-)-ISOAPLYSIN [J].
BISWAS, S ;
GHOSH, A ;
VENKATESWARAN, RV .
JOURNAL OF ORGANIC CHEMISTRY, 1990, 55 (11) :3498-3502
[2]   COMPARISON OF THE SESQUITERPENES FROM THE SEAWEED LAURENCIA-PACIFICA AND ITS EPIPHYTE ERYTHROCYSTIS-SACCATA [J].
CREWS, P ;
SELOVER, SJ .
PHYTOCHEMISTRY, 1986, 25 (08) :1847-1852
[3]   DEFENSIVE CHEMISTRY OF NAVANAX AND RELATED OPISTHOBRANCH MOLLUSKS [J].
FENICAL, W ;
SLEEPER, HL ;
PAUL, VJ ;
STALLARD, MO ;
SUN, HH .
PURE AND APPLIED CHEMISTRY, 1979, 51 (09) :1865-1874
[4]   STEREOCONTROLLED SYNTHESIS OF (+/-)-DEBROMOAPLYSIN AND (+/-)-APLYSIN [J].
GHOSH, A ;
BISWAS, S ;
VENKATESWARAN, RV .
JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1988, (21) :1421-1421
[5]   PREPARATION AND REARRANGEMENT OF TRICHOTHECANE-LIKE COMPOUNDS - SYNTHESIS OF APLYSIN AND FILIFORMIN [J].
GOLDSMITH, DJ ;
JOHN, TK ;
KWONG, CD ;
PAINTER, GR .
JOURNAL OF ORGANIC CHEMISTRY, 1980, 45 (20) :3989-3993
[6]   A SYNTHETIC APPROACH TO THE PSEUDOPTEROSINS USING CASCADE TECHNOLOGY [J].
HARROWVEN, DC ;
DENNISON, ST ;
HOWES, P .
TETRAHEDRON LETTERS, 1994, 35 (24) :4243-4246
[7]   Zirconium tetrachloride as a mediator for ambient temperature ortho-Fries rearrangements [J].
Harrowven, DC ;
Dainty, RF .
TETRAHEDRON LETTERS, 1996, 37 (42) :7659-7660
[8]   MICHAEL INITIATED RING-CLOSURE REACTIONS IN NATURAL PRODUCT SYNTHESIS - A CONCISE ENTRY TO THE PODOPHYLLINS [J].
HARROWVEN, DC .
TETRAHEDRON, 1993, 49 (40) :9039-9048
[9]   The intramolecular addition of an aryl radical to a pyridine provides a short entry to toddaquinoline [J].
Harrowven, DC ;
Nunn, MIT .
TETRAHEDRON LETTERS, 1998, 39 (32) :5875-5876
[10]   A short synthesis of α-herbertenol featuring the use of a dihydropyranone as a 1,5-diketone synthon [J].
Harrowven, DC ;
Hannam, JC .
TETRAHEDRON LETTERS, 1998, 39 (51) :9573-9574