3-Phenylamino-5-bromo-2-pyrone undergoes facile Diels–Alder cycloadditions with various
electron deficient dienophiles to afford an array of functionally rich and stereochemically …

Feeding experiments with ent-kaurenoic acid (4), 15α-hydroxy-ent-kaurenoic acid (5), 15β-
hydroxy-ent-kaurenoic acid (6), and mixtures of 4 plus 5 and 4 plus 6 were conducted using …

An efficient method for the synthesis of substituted 2H-pyran-2-ones and polyhydroxy
coumarin derivatives has been developed via CuO-catalyzed C–C bond formation followed …

An atom-economic reaction sequence on a multigram scale for synthesizing 2-pyrone was
developed starting from furfuryl alcohol, a renewable resource made from bran or bagasse …

The gibberellin precursors—ent-kaur-16-ene (1), ent-kaur-16-en-19-ol (2), ent-kaur-16-en-
19-al (3) and ent-kaur-16-en-19-oic acid (4)—were fed to Gibberella fujikuroi gibberellin …

Naturally occurring heterocycles such as pyrones, dihydropyrones, and isocoumarins have
proven to be highly active biological agents with a vast plethora of applications. Therefore …

目的研究半边铁角蕨(AspleniumunilateraleLam) 全草化学成分. 方法全草采用甲醇提取,
利用硅胶, Sephadex LH-20, 半制备HPLC 等色谱技术方法进行分离纯化 …

A one‐pot sequence of Sonogashira coupling and iodocyclization afforded novel amino-
containing trisubstituted 2H-pyran-2-ones in good yields. This transformation proceeds via …

Palladium-catalyzed coupling of propargyl glycosides with o-iodobenzoic acid leads to the
selective syntheses of hitherto unknown, novel isocoumarin glycosides in 43-55% yields …

Readily available (chlorocarbonyl) phenyl ketene and a varied set of β-ketoamides were
reacted in a one-step procedure to produce 2-pyrone derivatives. β-Ketoamide derivatives …