Bioinspired syntheses of cryptoflavanones C and D, oboflavanones A and B, and cryptoyunnanones G and H enabled by an acid-triggered cascade sequence

Abstract

We herein present a concise synthetic route for collective total syntheses of six flavanones named as oboflavanones A-B, cryptoflavanones C-D, and cryptoyunnanones G-H, which were all isolated from the genus...

Heteroatom-doped hierarchically porous thick bulk carbon derived from a Pleurotus eryngii/lignin composite: a free-standing and high mass loading electrode for high-energy-density storage

“…The analysis of capacitance contribution distribution enabled the exploration of charge storage behavior and thus provided a comprehensive understanding of the energy storage mechanism. 62 This study tested the cyclic voltammograms of C-PE and C-PE-LS at various sweep speeds (1, 2, 5, 10, and 20 mV s −1 ), as presented in Fig. 5a and d.…”

Diastereoselective Synthesis of Chromeno[3,2-d]isoxazoles via Brønsted Acid Catalyzed Tandem 1,6-Addition/Double Annulations of o-Hydroxyl Propargylic Alcohols

“…To the best of our knowledge, 1,4-conjugate addition of different nucleophiles has found wide application in the reported transformations of o -AQMs, while few examples concerning 1,6-conjugate addition have been disclosed (Scheme c). In continuing our interest in synthesis of polycyclic chroman derivatives and intrigued by the rich reactivity of o -AQMs, we report herein a fundamentally new tandem double annulation reaction initiated by 1,6-conjugate addition of H 2 O to o -AQMs and provide a stereoselective access to novel tricyclic chromeno­[3,2- d ]­isoxazoles (Scheme d).…”