排序方式: 共有16条查询结果,搜索用时 93 毫秒
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Mujahid Mohammad Venkaiah Chintalapudi Jeffrey M. Carney Steven J. Mansfield Pollyanna Sanderson Kirsten E. Christensen Edward A. Anderson 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(50):18345-18349
A highly convergent strategy for the synthesis of the natural product (?)‐rubriflordilactone B, and the proposed structure of (?)‐pseudo‐rubriflordilactone B, is described. Late stage coupling of diynes containing the respective natural product FG rings with a common AB ring aldehyde precedes rhodium‐catalyzed [2+2+2] alkyne cyclotrimerization to form the natural product skeleton, with the syntheses completed in just one further operation. This work resolves the uncertainty surrounding the identity of pseudo‐rubriflordilactone B and provides a robust platform for further synthetic and biological investigations. 相似文献
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《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2017,129(12):3382-3386
An asymmetric synthesis of C 3‐symmetric triangular macrocycles is reported. 1‐Methylsulfonyl‐4‐(4‐vinylphenyl)‐1,2,3‐triazole undergoes a rhodium(II)‐catalyzed cyclotrimerization to establish an enantiopure C 3‐symmetric triangular macrocycle motif. This method can be applied to the synthesis of an enantiopure hydrocarbon, which owes its chirality to asymmetric distribution of H/D atoms on the benzene rings. 相似文献
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Reinhard P. Kaiser David Ne
as Timothe Cadart Robert Gyepes Ivana Císaov Jií Mosinger Lubomír Pospíil Martin Kotora 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(48):17329-17334
This work presents a general approach for synthesis of substituted [5]‐helical dispiroindeno[2,1‐c]fluorenes based on Rh‐catalyzed intramolecular cyclotrimerization of triynes. This approach was further extended for the first synthesis of configurationally stable [7]‐helical dispiroindeno[2,1‐c]fluorenes. A series of variously substituted derivatives was prepared and their photophysical and electrochemical properties were evaluated. Their fluorescence emission maxima were in the region of 351–428 nm and quantum yields up to 88 % are the highest measured among the full‐carbon helical compounds. 相似文献
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