苯并二氢吡喃具有类维生素A的生物活性。
目的设计并合成苯并吡喃酮酯衍生物并探索其趋骨性。
OBJECTIVE to design and synthesize benzopyrone ester derivatives and to test their bone affinity.
纯戊二醛主要以环状二氢吡喃结构形式存在于水溶液中。
Pure glutaraldehyde existed in water in form of cyclic dihydropyran.
在不同的标准缓冲溶液中吡喃草酮光降解速度明显降低。
The tepraloxydim light degeneration speed reduces obviously in the different standard cushion solution.
苯并吡喃酮化合物，其组合物，以及治疗或预防癌症的方法。
Benzopyranone compounds, compositions thereof, and methods for treating or preventing cancer.
结论部分设计的苯并吡喃4酮衍生物具有比四环素更好的趋骨性。
Conclusion Some of the benzopyran-4-one derivatives synthesized have better bone affinities compared with tetracycline.
介绍了近年来2,4 -吡喃二酮衍生物的合成方法的研究进展。
The progress in the method of synthesis of 2, 4-dipyrones derivatives is summarized.
本发明涉及一种制备包含至少一个另外的含氧环的四氢吡喃衍生物的方法。
The invention relates to a method for producing tetrahydropyrane derivatives which comprise at least one additional ring containing oxygen.
在瓜拉那中约一半D-吡喃甘露糖主链的单元含一个D-吡喃半乳糖侧链。
In guaran, about one-half of the D-mannopyranosyl main-chain units contain a D-galactopyranosyl side chain.
氨磺酰-取代的苯并二氢吡喃，其制法，作为药物或诊断剂的应用及含有它的药物。
Sulfamine-substituted benzodihydopyran, preparation method, use as medicine or diagnostic reagent and medicine containing same.
苯骈吡喃类钾通道启开剂具有很强的血管扩张作用，可望成为较理想的抗高血压药物。
Potassium channel openers, most of which are benzopyran compounds, possess significant activity of vasodilation and may become promising antihypertensive drugs.
本发明特别涉及具有两个四氢吡喃环或者具有至少各一个四氢吡喃环和二韧榛返幕合物。
The invention also relates to, in particular, compounds having two tetrahydropyrane rings or at least one tetrahydropyrane ring and a dioxane ring.
吡喃阿霉素的毒性主要是骨髓抑制，但脱发率相对较低，心脏毒性、肝肾功能损害轻微。
Myelosuppression was main toxicity of Pirarubicin, but alopecia was relatively slight and cardiac, liver, renal toxicity were mild.
萘酚吡喃分子是一类性能优良的光致变色材料，而目前很少有关于萘酚吡喃聚合物的报道。
Naphthopyran is a kind of photochromic materials with good performance, whereas there are just several reports about naphthopyran polymers.
在苯并吡喃部分含有硝基的螺吡喃显示出逆光致变色行为，其它的则为普通光致变色化合物。
The spiropyrans with a nitro group at the benzopyran moiety showed reverse photochromic behavior, others were normal photochromic compounds.
苯并咪唑衍生物取代的苯并吡喃衍生物，其药用盐，它们的制备方法和含有它们的药物组合物。
Benzopyran derivatives substituted with a benzimidazole derivative, pharmaceutically acceptable salts thereof, their preparations and pharmaceutical compositions containing them.
再次，通过改变与吡喃酮环相连的亚甲基碳原子的电子云杂化状态，设计了化合物类型2.11。
Moreover, parent compound 2.11 was designed by changing hybridization of carbon which attached with the pyranone D-ring at 7-position.
目的根据具有趋骨性的化合物的共同特征，设计并合成苯并吡喃4酮类化合物，检测它们的趋骨性。
Aim to design and synthesize benzopyran-4-one derivatives according to the common structural properties of compounds which have bone affinity and test their bone affinity.
从四氢吡喃醚的合成及脱除方法介绍了二氢吡喃这种羟基保护试剂近十几年来在有机合成中的应用。
As an effective protection for hydroxy group in alcohols and phenols, the methods for the formation of tetrahydropyran ether and its cleavage employed in the last 15 years are reviewed.
本发明涉及一种用于制备链烯基化的羟化芳族化合物、苯并二氢吡喃化合物和其酰化衍生物的方法。
The present invention relates to a process for the manufacture of alkenylated hydroxylated aromatic compounds, of chroman compounds and of their acylated derivatives.
具有2-苯基苯并吡喃结构的也称为花青素类色素，为花色索的基元，2 -苯基苯并吡喃酮也称花黄素类。
With 2 - phenyl benzo - pyran structure, also known as anthocyanin pigments, the base element for the flower pigments, 2 - phenyl - benzo - pyrone, also known as anthoxanthin class.
吡喃盐是指含有六元氧杂环正离子结构的有机芳香化合物，因其独特的化学及物理特性而具有非常广泛的应用价值。
Pyrylium salts are a type of organic aromatic compounds with one or more six-numbered oxoheterocyclic cations, which are practically valuable owing to their peculiar chemical and physical properties.
吡喃阿霉素组对K562/A02细胞的抑制率较相同剂量表阿霉素组或柔红霉素组抑制率显著增加（P<0.01）。
The inhibition rate on K562/A02 cell line of Pirarubicin group was significantly higher than that of the same dose of Pharmorubicin or Daunorubicin (P<0.01).
吡喃酮类化合物在飞蓬属植物中广泛存并且显示了强的治疗脑中风及调节血压的作用，以及对缺血再灌注损伤的保护作用。
Pyran Derivatives is widespread in erigeron, And the treatment showed a strong stroke, And the regulation of blood pressure, the protection effect For ischemia-reperfusion injury.
具有视黄酸衍生物类生物活性的四氢萘、苯并二氢吡喃、二氢苯并噻喃和1，2，3，4-四氢喹啉羧酸的芳基或杂芳基酰胺。
Aryl or heteroaryl amides of tetrahydronaphthalene, chroman, thiochroman and 1,2,3,4-tetrahydroquinoline carboxylic acids having retinoid-like biological activity.
合成三种N，N＇-1，4-亚丁基双螺吡喃和双螺恶嗪光致变色化合物，通过红外光谱、核磁共振氢谱及元素分析确证其结构。
Three photochromic N, N'-1,4-tetramethylene bisspiropyran and bisspirooxazine compounds were synthesized. They have been identified by IR spectra, 1H -NMR spectra and elemental analysis;
合成三种N，N＇-1，4-亚丁基双螺吡喃和双螺恶嗪光致变色化合物，通过红外光谱、核磁共振氢谱及元素分析确证其结构。
Three photochromic N, N'-1,4-tetramethylene bisspiropyran and bisspirooxazine compounds were synthesized. They have been identified by IR spectra, 1H -NMR spectra and elemental analysis;
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