N butyl 2 ethoxy thioacridone ; acridone ; electron transfer ; fluorescence

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Spraying with chitosan of different concentration significantly increased the content of chlorophyll ,anthoxanthin ,chlorogentic acid, polyphenal ,soluble protein and total soluble sugar of Broccoli flowers. 40 mg L-l chitosan showed the most remarkable effet,compared to control, the content of chlorophyll ,anthoxanthin ,chlorogentic acid, total soluble sugar and soluble protein of treated Broccoli flowers increased by 64.4%,282.5%,35.6%,16.2% 22.7% respectively.PAL and PPO are key enzymes in synthesize of phenolics.No relation was found between phenolics synthesize and PAL activity in Broccoli flowers,but it showed positive relation between phenolics synthesize and PPO activity.

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Study on an efficient process for the preparation of trifloxystrobin starting from 2-methylacetophenone bypartial oxidation,esterification,reaction with methoxyamine,bromization and condensation with 3'- acetophenone oxime.

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Dimethyoxyphenyl Lithium and 2,4,6-trimethoxyphenyl Lithium could also react whth γ-butyrolactone to produce -hydroxypropyl 2,4-dimethoxyph

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Their chemical structures were characterizd on the basis of spectral and chemical evidences to be: Sarracenin (1), 2-methyl-5-hydroxy-7-O-ethyl caffeate chromome (2), Naringenin(3), 2-methyl-5, 7-dihydroxychromome (4), 2-methyl-6-hydroxyl-cinnamic acid methyl ester (5), eriodictyol (6), quercetin (7), Naringenin-7-O-β-D-glucoside( 8 ), eriodictyol-7-O-α-D-glucoside (9), quercetin-3-O-β-D-glucoside(10). In addition, one compound was abtained from the n-butanol frationk, which was finally identified as Morrosiside(11) by spectral and chemical evidences.

以波譜數(shù)據(jù)及其理化性質(zhì)鑒定為：Sarracenin(1)女人十八级毛片，2-甲基-5-羥基-7-O-咖啡酸乙酯色原酮(2)，柚皮素(3)在线免费自拍视频，2-甲基-5精品亚州第一页，7-二羥基色原酮(4)，2-甲基-6-羥基苯丙烯酸甲酯(5)免费麻豆精品无码国产在线，圣草酚(6)av小次郎网站，槲皮素(7)，柚皮素-7-O-β-D-葡萄糖苷(Naringenin-7-O-β-D-glucoside)(8)三级黄免费视频网站，圣草酚-7-O-α-D-葡萄糖苷(eriodictyol-7-O-α-D-glucoside)(9)四房播播综合在线，槲皮素-3-O-β-D-葡萄糖苷(quercetin--3-O-β-D-glucoside)(10)；另外從正丁醇萃取部位分離得到1個化合物欧美视频黄页，以波譜數(shù)據(jù)和文獻對照鑒定為：Morroniside(11)韩国三级在线播放。

RESULTS:Six flavonoids 6-C-glycopyranosyl-8-C-glycopyranosyl apigenin(1),6-C-arabinosyl-8-C-glycopyranosyl apigenin(2),6-C-glycopyranosyl-8-C-arabinosyl apigenin(3),6-C-glycopyranosyl-8-C-xyloeyl apigenin(4),6-C-glycopyranosyl luteolin(5),luteolin(6),one chromone isobiflorin(7),and one lignanoid-isolariciresinol(8),were isolated from the n-BuOH fraction of this plant,respectively.

結(jié)果：從毛雞骨草地上部分的正丁醇部位分離并鑒定了8個化合物，黃酮類化合物：芹菜素-6-C-葡萄糖-8-C-葡萄糖苷（1）人摸美女人人砬美女人人看，芹菜素-6-C-阿拉伯糖-8-C-葡萄糖苷（2）中国熟妇色視頻一区二区三区，芹菜素-6-C-葡萄糖-8-C-阿拉伯糖苷（3），芹菜素-6-C-葡萄糖-8-C-木糖苷（4）毛片网站观看，木犀草素-6-C-葡萄糖苷（5）黄页网站视频操出液体，木犀草素（6）；色原酮類化合物：異雙花母草素（7）YY6080午夜福利理论中文；木脂素類化合物：-異落葉松樹脂醇（8）免费美国黄片。

Heptanone was synthesized from n - butyl aldehyde and propanone via cross al-dol condensation, dehydration, catalyzed hydrogenation.

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In this thesis, we describe a facile and economical synthesis of-abscisic acid from keto-isophorone and 3-butyn-2-ol through ketalization, oxidization, Witting-Horner reaction, reduction with chromium sulfate and other steps in 13% total yields. Compared to the previous routes, the starting materials are more commercially available and cheaper and the synthetic process is more easily controlled in our method, but the yield of this route is still to be improved.As to isostere principle, cyclopropyl and methyl vinyl are a couple of isostere.

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Hβ zeolite ; seven-member-ring ketal ; 1; 4-butanediol ; synthesis ; catalyst

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There were ten compounds gave the large contribution on the flavor of milk fat,they were octanal,2-nononone,ethyl carpylate,butanoic-acid,pentanoic acid,2-tridecanone,hexanoic acid,heptanioc acid,octanioc acid(flower-like,a little winey)and an unknown compound.

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