Convergent synthesis of the HIJKLM ring fragment of ciguatoxin CTX3C
摘要:
Ciguatoxin CTX3C is a representative congener of the ciguatoxins, which are known to be the principal causative agents of ciguatera food poisoning. The structure of CTX3C spans more than 3 nm and is characterized by 13 ether rings. To attain a practical construction of this molecule, efficient supplies of the structural fragments are crucial. Herein we report the convergent synthesis of the HIJKLM ring fragment and present a new carbonyl olefination protocol to cyclize the J ring using low-valent titanium. (C) 2002 Elsevier Science Ltd. All rights reserved.
Convergent synthesis of the HIJKLM ring fragment of ciguatoxin CTX3C
作者:Hisatoshi Uehara、Tohru Oishi、Masayuki Inoue、Mitsuru Shoji、Yoko Nagumo、Masashi Kosaka、Jean-Yves Le Brazidec、Masahiro Hirama
DOI:10.1016/s0040-4020(02)00660-9
日期:2002.8
Ciguatoxin CTX3C is a representative congener of the ciguatoxins, which are known to be the principal causative agents of ciguatera food poisoning. The structure of CTX3C spans more than 3 nm and is characterized by 13 ether rings. To attain a practical construction of this molecule, efficient supplies of the structural fragments are crucial. Herein we report the convergent synthesis of the HIJKLM ring fragment and present a new carbonyl olefination protocol to cyclize the J ring using low-valent titanium. (C) 2002 Elsevier Science Ltd. All rights reserved.
Practical entry into the HIJKLM ring segment of ciguatoxin CTX3C
作者:Tohru Oishi、Hisatoshi Uehara、Yoko Nagumo、Mitsuru Shoji、Jean-Yves Le Brazidec、Masashi Kosaka、Masahiro Hirama
DOI:10.1039/b009506k
日期:——
The HIJKLM ring segment (27) of the right half portion of
ciguatoxin CTX3C (1) has been synthesized using a ring-closing reaction
mediated by a low-valent titanium reagent.