Stereocontrolled construction of the trans-tetrahydrofuran units in Annonaceous acetogenins
作者:Shi-Kai Tian、Zhi-Min Wang、Jian-Kang Jiang、Min Shi
DOI:10.1016/s0957-4166(99)00259-1
日期:1999.7
the construction of trans-tetrahydrofuran (THF) unit from trans-1,5,9-decatriene was successfully developed by means of Sharpless AD reactions and oxidative cyclizations catalyzed by Co(modp)2 under an oxygen atmosphere. Based on this new synthetic strategy, the trans-mono-THF unit, trans-bis-THF unit and trans-tris-THF unit in Annonaceous acetogenins were smoothly obtained.
Pd(0)-Catalyzed Oxy- and Aminoalkynylation of Olefins for the Synthesis of Tetrahydrofurans and Pyrrolidines
作者:Stefano Nicolai、Jérôme Waser
DOI:10.1021/ol2029383
日期:2011.12.2
The first Pd(0)-catalyzed intramolecular oxy- and aminoalkynylation of nonactivated olefins is reported. The reaction gives access to important tetrahydrofuran and pyrrolidine heterocycles with high diastereoselectivity. The unique synthetic potential of acetylenes is further exploited to access key building blocks for the synthesis of bioactive natural products.
A facile route to the total synthesis of gigantetrocin A
作者:Zhi-Min Wang、Shi-Kai Tian、Min Shi
DOI:10.1016/s0957-4166(99)00039-7
日期:1999.2
A highly efficient synthetic method of the trans-mono-tetrahydrofuran (THF) ring building block was established and the title compound synthesized in 19 steps from trans-1,4-dichloro-2-butene via a convergent route with a Wittig reaction as the key step. (C) 1999 Elsevier Science Ltd. All rights reserved.
The synthesis of asimilobin and the correction of its tetrahydrofuran segment's configuration
作者:Zhi-Min Wang、Shi-Kai Tian、Min Shi
DOI:10.1016/s0040-4039(98)02577-5
日期:1999.1
A highly efficient synthetic method for the trans/threo/trans- bis-tetrahydrofuran (THF) ring building block was established. The title compound was synthesized in thirteen steps from trans-1,4-dichloro-2-butene via a convergent route with a Wittig reaction as the key step. The absolute configuration of the THF segment of naturally occurring asimilobin should be corrected. (C) 1999 Elsevier Science Ltd. All rights reserved.
Alteration of the Bis-tetrahydrofuran Core Stereochemistries in Asimicin Can Affect the Cytotoxicity
作者:Subhash C. Sinha、Zhiyong Chen、Zheng-Zheng Huang、Eiko Nakamaru-Ogiso、Halina Pietraszkiewicz、Matthew Edelstein、Frederick Valeriote
DOI:10.1021/jm801028c
日期:2008.11.27
A systematic analysis using 10 synthetic asimicin stereoisomers revealed that the stereochemistry of the bis-tetrahydrofuran core, including the tetrahydrofuran rings and the adjacent hydroxy functions, had significant effect on its cytotoxicity. Our findings set to rest the highly controversial perception that the stereochemistry of the tetrahydrofuran core has little effect on the activity, which is not true for its cytotoxic effect, and also reinforces the previous conclusion that asimicin is a highly potent anticancer compound.