Mechanisms of the Diterpene Cyclases β-Pinacene Synthase from<i>Dictyostelium discoideum</i>and Hydropyrene Synthase from<i>Streptomyces clavuligerus</i>
作者:Jan Rinkel、Patrick Rabe、Xinlu Chen、Tobias G. Köllner、Feng Chen、Jeroen S. Dickschat
DOI:10.1002/chem.201702704
日期:2017.8.4
Two diterpenecyclases, one from the social amoeba Dictyostelium discoideum and the other from the bacterium Streptomyces clavuligerus, with products containing a Z‐configured double bond between the original C2 and C3 of geranylgeranyl diphosphate, were extensively investigated for their mechanisms through isotopic labelling experiments. The participation of geranyllinalyl diphosphate, in analogy
Synthesis of Deuterium-Labeled Derivatives of Dimethylallyl Diphosphate
作者:Hirekodathakallu V. Thulasiram、Richard M. Phan、Susan B. Rivera、C. Dale Poulter
DOI:10.1021/jo052384n
日期:2006.2.1
Short practical syntheses for five deuterium-labeled derivatives of dimethylallyl diphosphate (DMAPP) useful for enzymological studies are reported. These include the preparation of the Cl-labeled derivatives (R)-[1-H-2]3-methylbut-2-enyl diphosphate ((R)-[1-H-2]1-OPP) and (S)-[1-H-2]3-methylbut-2-enyl diphosphate ((S)-[1-H-2]1-OPP), the C2-labeled derivative [2-H-2]3-methylbut-2-enyl diphosphate ([2-H-2]1-OPP), and the methyl-labeled derivatives (E)-[4,4,4-H-2(3)]3-methylbut-2-enyl diphosphate ((E)-[4,4,4-H-2(3)]1-OPP) and (Z)-[4,4,4-H-2(3)]3-methyl-but-2-enyl diphosphate ((Z)[4,4,4-H-2(3)]1-OPP).
One-Pot Synthesis of Seven-Membered Heterocyclic Derivatives of Diazepines Involving Copper-Catalyzed Rearrangement Cascade Allyl-Amination
作者:Yuepeng Chen、Xinglei Liu、Wei Shi、Shilong Zheng、Guangdi Wang、Ling He
DOI:10.1021/acs.joc.9b02710
日期:2020.4.17
trifluoromethanesulfonate as catalysts in the presence of triphenylphosphine. This synthesis process involves nitrene formation, C–H bond insertion, C═C bond rearrangement, and C–N bond formation cascade reactions via copper- and molybdenum-catalyzed mediation. The method features a wide substrate scope and a moderate to high yield (up to 90%), exhibiting the possibility for practical applications
提出了一种在三苯基膦存在下,以乙酰丙酮钼和三氟甲磺酸铜 (II) 为催化剂,从邻硝基苯甲酸N-烯丙基酰胺合成 1,4-苯二氮卓-5-酮的新型有效方法。该合成过程包括氮烯形成、C-H 键插入、C=C 键重排以及通过铜和钼催化介导的 C-N 键形成级联反应。该方法具有广泛的底物范围和中高产率(高达 90%),具有实际应用的可能性。