ineluctable
发表于 2025-4-1 04:25:18
Newer Applications of Circular Dichroism in Natural Products Chemistry,rized light by traversing the substance, ., expressed as Δε ≡ ε. - ε. (if the relative molar mass of the molecules is known, or - in case of biopolymers - the mean residual relative molar mass), and ., [Θ] = 3300 × Δε. A necessary condition for optical activity of a substance is the . of its molecul
GIDDY
发表于 2025-4-1 06:31:14
Novel Carbohydrate Transformations Discovered en Route to Natural Products, centers, 2 of which are tertiary alcohols, and a third is a methoxycarbonyl group. The synthesis begins with levoglucosan (1,6-anhydro-β-.-glucopyranose), which by a process of pyranosidic homologation, is elaborated into a dipyranoside, and thence a tripyranoside which carries eight of the nine ch
embolus
发表于 2025-4-1 10:28:16
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名次后缀
发表于 2025-4-1 17:07:15
Total Synthesis of Nitrogen-Containing Natural Products via Nitroso Diels-Alder Reaction,3,6-dihydro-l,2-oxazines 1 (ref. 1). A synthetically important feature of the products is introduction of nitrogen and oxygen functionality at the same time with a high degree of regiochemical and stereochemical control. Subsequent reduction of these cycloadducts can easily be achieved by using a wi
有效
发表于 2025-4-1 21:48:05
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