Design and synthesis of highly reactive dienophiles for the tetrazine-trans-cyclooctene ligation.

Design and synthesis of highly reactive dienophiles for the tetrazine-trans-cyclooctene ligation.
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DOI:
10.1021/ja201844c
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发表时间:
2011-06-29
影响因子:
15
通讯作者:
Fox, Joseph M.
Fox, Joseph M.
中科院分区:
化学1区
文献类型:
--
作者:
Taylor, Michael T.;Blackman, Melissa L.;Dmitrenko, Olga;Fox, Joseph M.

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Computation was used to design a trans-cyclooctene derivative that displays enhanced reactivity in the tetrazine-trans-cycloctene ligation. The optimized derivative is a (E)-bicyclo[6.1.0]non-4-ene with a cis-ring fusion, in which the eight-membered ring is forced to adopt a highly strained ‘half-chair’ conformation. Toward 3,6-dipyridyl-s-tetrazine in MeOH at 25 °C, the strained derivative is 19 and 27 times more reactive than the parent trans-cyclooctene and 4E-cyclooct-4-enol, respectively. Toward 3,6-diphenyl-s-tetrazine in MeOH at 25 °C, the strained derivative is 160 times more reactive than the parent trans-cyclooctene.
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