Stereoselective Synthesis of β‐Branched Aromatic α‐Amino Acids by Biocatalytic Dynamic Kinetic Resolution**
作者:Fuzhuo Li、Li‐Cheng Yang、Jingyang Zhang、Jason S. Chen、Hans Renata
DOI:10.1002/anie.202105656
日期:2021.8.2
prepare a broad range of aromatic β-branchedα-aminoacids. Mechanistic studies show that the transformation proceeds through dynamic kinetic resolution that is unique to the optimal enzyme. To highlight its utility and practicality, the biocatalytic reaction was applied to the synthesis of several sp3-rich cyclic fragments and the first total synthesis of jomthonic acid A.
Regio-, Diastereo-, and Enantioselective Nitroso-Diels–Alder Reaction of 1,3-Diene-1-carbamates Catalyzed by Chiral Phosphoric Acids
作者:Jonathan Pous、Thibaut Courant、Guillaume Bernadat、Bogdan I. Iorga、Florent Blanchard、Géraldine Masson
DOI:10.1021/jacs.5b08515
日期:2015.9.23
nitroso-Diels-Alder reaction of nitrosoarenes with carbamate-dienes afforded cis-3,6-disubstituted dihydro-1,2-oxazines in high yields with excellent regio-, diastereo-, and enantioselectivities. Interestingly, we observed that the catalyst is able not only to control the enantioselectivity but also to reverse the regioselectivity of the noncatalyzed nitroso-Diels-Alder reaction. The regiochemistryreversal and asynchronous
Investigations into the biosynthesis of the antifungal strobilurins
作者:Zafar Iqbal、Li-Chen Han、Anna M. Soares-Sello、Risa Nofiani、Gerald Thormann、Axel Zeeck、Russell J. Cox、Christine L. Willis、Thomas J. Simpson
DOI:10.1039/c8ob00608c
日期:——
bolineol related metabolites, strobilurins Y and Z, also probably involves epoxide intermediates. Time course studies indicate a likely biosynthetic pathway from strobilurin A, with the simplest non-subsubstituted benzoate ring, to strobilurin G with a complex dioxepin terpenoid-derived substituent. Precursor-directed biosynthetic studies allow production of a number of novel ring-halogenated analogues as
Enantioselective Synthesis of the 1,3‐Dienyl‐5‐Alkyl‐6‐Oxy Motif: Method Development and Total Synthesis
作者:Jie Wang、Chuning Guo、Yaqian Liu、Yunpeng Ji、Hongli Jia、Houhua Li
DOI:10.1002/anie.202400478
日期:2024.4.8
Method development and totalsynthesis have resulted in the enantioselective synthesis of the 1,3-dienyl-5-alkyl-6-oxy motif, and thus expedient total syntheses of three types of natural products (glutarimideantibiotics, α-pyrone polyketides and Lupin alkaloids), completed within 4–7 steps.