Results 121 to 130 of about 27,574 (257)

Benzochromanone and Benzochromene Natural Products: Synthetic Strategies and Total Syntheses

The Chemical Record, EarlyView.
This work outlines synthetic strategies for natural products with benzochromanone and benzochromene cores. Key achievements include total syntheses of xanthones, blennolide C, gonytolide C, and teretifolione B. Spirochromanone intermediates, benzyne–furan Diels–Alder reactions, and enzymatic resolution enabled efficient and enantioselective access to ...
Takuya Kumamoto
wiley   +1 more source

Studies on Chiral Organosulfur Compounds. VI. The Use of a Chiral Diene Bearing an Optically Active Sulfinylmethyl Group in the Lewis Acid-Catalyzed Intramolecular Asymmetric Hetero Diels-Alder Reaction.

, 1997
Kunio Hiroi, Masayuki Umemura, Yoko Tomikawa, Masamitsu Kaneko, Fumiko Kato   +4 more
openalex   +2 more sources

Computational insights into the Multi-Diels-Alder reactions of neutral C60 and its Li+ encapsulated analogue: A DFT study [PDF]

, 2021
Tamalika Ash, Soumadip Banerjee, Tanay Debnath, Abhijit K. Das   +3 more
openalex   +1 more source

Direct Identification and Quantification of Flavonoids and Their Structural Isomers Using Ambient Ionization Tandem Mass Spectrometry

Rapid Communications in Mass Spectrometry, Volume 40, Issue 3, 15 February 2026.
ABSTRACT Rationale Flavonoids are phenolic compounds with many health‐benefiting properties. However, differentiating different types of flavonoids and their isomers is challenging due to their highly similar structures of various subtypes and different numbers and sites of substituents.
Yanqiu Wang, Liping Xu, Tiange Gu, Hongli Li, David Da Yong Chen   +4 more
wiley   +1 more source

How Alkali Cations Catalyze Aromatic Diels‐Alder Reactions [PDF]

, 2020
Pascal Vermeeren, Francine Brinkhuis, Trevor A. Hamlin, F. Matthias Bickelhaupt   +3 more
openalex   +1 more source

Artemisia selengensis Leaves, a Vegetable Waste: LC‐MS‐Based Chemical Profiling, Ultrasound‐Assisted DES Extraction, and Xanthine Oxidase Inhibitory Activity

eFood, Volume 7, Issue 1, February 2026.
This study focused on Artemisia selengensis leaves (ASL), a discarded agricultural waste. 72 compounds were identified by UPLC‐Q‐TOF‐MS. “Green” extraction with DES was optimized, and ASL's XO—inhibition was explored, presenting new ways for waste utilization. ABSTRACT Artemisia selengensis is a medicinal and edible plant, whose tender stems are widely
Lixia Li, Mingqiu Shan, Rongli Qiu, Sheng Yu, Ting Geng, Li Zhang, Xinli Liang, Baoxiang Wu, Facheng Zhang   +8 more
wiley   +1 more source

Taming of Low‐Valent Arsenic Compounds and Transfer of Nascent As2 Facilitated by a Frustrated Lewis Pair

Angewandte Chemie, Volume 138, Issue 3, 16 January 2026.
A series of frustrated Lewis pair (FLP) stabilized arsenic compounds with formal oxidation numbers at As of +1, 0, and −1 are presented. A stable FLP‐chelated complex of As2 was prepared which undergoes the light‐induced release of nascent diarsenic, As2nasc, which reveals clean triple‐bond type reactivity with dienes and metal‐metal bonds under mild ...
Ludwig Zapf, Gábor Balázs, Manfred Scheer, Eric Rivard   +3 more
wiley   +2 more sources

π-Facial selectivity in the Diels-Alder reactions of the 1,3-cyclohexadienes bearing allylic oxygen substitution [PDF]

, 1992
James Gillard
openalex  

Diels–Alder reactions and electrophilic substitutions with atypical regioselectivity enable functionalization of terminal rings of anthracene [PDF]

, 2020
Vinh Ngoc Huynh, Michael Leitner, Aditya Bhattacharyya, Lisa Uhlstein, Peter Kreitmeier, Patrick Sakrausky, Julia Rehbein, Oliver Reiser   +7 more
openalex   +1 more source

Thiophene Derivatives as Versatile Precursors for (Hetero)Arene and Natural Product Synthesis

Angewandte Chemie International Edition, Volume 65, Issue 5, 28 January 2026.
Hidden but Powerful: Thiophenes and their saturated analogues have been demonstrated to be versatile C4‐building blocks that can be rapidly applied to natural product synthesis and the construction of functionalized (hetero)arenes. This minireview aims to provide a concise overview of the strategies and implementations of these sulfur‐containing ...
Anna Keimer, Franz‐Lucas Haut
wiley   +1 more source