化合物

Their biological activities to several vegetable pathogens have been tested and the results showed that they exhibited good fungicidal activities.

并对这些化合物进行了初步生物活性测试，结果表明大部分化合物具有较好的抑菌活性，并对席夫碱结构与活性的关系进行了探讨。

The biological activities of partial imidazolones were studied. The results showed that they did not exhibit obviously herbicidal activity but fungicidal activity.

研究了部分咪唑啉酮化合物的生物活性，结果表明此类化合物均未表现出明显的除草活性，但表现出抑菌活性。

In this paper, the research and application progress on quinolines, benzimidazoles, and furazan etc deviatives of rosin were reviewed. The research foreground of rosin-based heterocyclic compounds were also forecasted.

本文对喹啉、苯并咪唑、呋咱等系列松香基杂环化合物的研究进展进行了综述，并对松香基杂环化合物的研究前景进行了展望。

The NMR data of compound 6 were completely assigned by 2D-NMR techniques,including1H-1H COSY, HMQC and HMBC spectra.This was the first time to report isolation of the compound 6 from natural product.The compounds 1-5 was isolated from the genus Galium for the first time.

化合物6为首次从天然产物中得到，并运用二维核磁共振波谱技术(1H-1H COSY，HMQC和HMBC)首次对其碳谱和氢谱数据进行了全归属，化合物1～5均为首次从该属植物中得到。

The results of biological test showed that some of these compounds had good fungicidal activity. The inhibition rate of most compounds to Botrytis cinerea Pers and Gibberella zeae coud reach 50% at the concentration of 50 mg/L. The inhibition rate of two compounds to Botrytis cinereapers were 85%.

同时对6种病原菌进行了生物活性测试，结果表明：在50 mg/L质量浓度下，大部分化合物对黄瓜灰霉病菌和小麦赤霉病菌抑制效果较好，抑制率达50%以上，且优于对照商品醚菌酯；特别是Ⅱh、Ⅱi化合物对黄瓜灰霉病菌抑制率达85%。

The method is illustrated through a study on a set of fluorine -containing pesticides for anti- gibberella. With the constraints of the pharmacophore obtained by DISCO, 53 virtual bio-active structures were generated, and their anti-gibberella activities were predicted by CoMFA.

采用这种方法对抗小麦赤霉病类含氟农药进行了研究，共生成了53个虚拟活性结构，通过3D-QSAR模型筛选出其中10个活性较高的结构，在活性最高的化合物基础上进行了结构修饰，得到了活性更高且毒性较低的理想化合物。

Firstly, the reactions of glutaric acid, sebacic acid and propargyl alcohol afforded two dipropargylesters:(CH≡CCH_2OCO)_2(CH_2)_3 (compound 1) and (CH≡CCH_2OCO)_2 (CH_2)_8 (compound 2),respectively.

首先，本文分别选用戊二酸，癸二酸与丙炔醇反应得到了两个新的有机二酸二丙炔醇酯：戊二酸二丙炔醇酯(CH≡CCH_2OCO)_2(CH_2)_3(化合物1)和癸二酸二丙炔醇酯(CH≡CCH_2OCO)_2(CH_2)_8(化合物2)。

Forbesii, monoterpenes and sesquiterpenes account for 41.30% and 32.65%, respectively, in which (1R)-α-pinene (3.98%), sabinene (2.51%),(1S)-β-pinene (5.78%), m-cymene (4.05%), limonene (3.55%), 3, 7-dimethyl-1, 3, 7-octatriene (3.98%),γ-terpinene (8.70%), anisole (1.78%) and (1S)-endo-bornyl acetate (2.62%) as the monoterpenes and its derivatives, and-β-elemene (1.17%),α-bulnesene (1.40%),-β-bisabolene (1.21%),-elemol (1.42%), guaiol (1.14%), dehydroxyisocalamendiol (1.13%),-aristolene (1.99%), bulnesol (9.48%),γ-eudesmol (1.77%), guai-1(10)-en-11-ol (1.12%) and α-bisabolol (5.35 %) as the sesquiterpenes and its derivatives are the main components.

1R-α-蒎烯(3·98 %)、桧烯(2·51 %)、(1S)-β-蒎烯(5·78 %)、m-月桂烯(4·05 %)、柠檬烯(3·55 %)、3，7-二甲基-1，3，7-庚三烯(3·98 %)、γ-萜品烯(8·70 %)、茴香醚(1·78 %)和(1S)-桥环醋酸冰片酯(2·62 %)为单萜类化合物及其衍生物中的主要成分；-β-榄香烯(1·17 %)、异愈创木烯(1·40 %)、-β-没药烯(1·21 %)、-榄香醇(1·42 %)、愈创木醇(1·14 %)、去羟基异菖蒲二醇(1·13 %)、-土青木香烯(1·99 %)、异愈创木醇(9·48 %)、γ-桉醇(1·77 %)、愈创木-1(10)-烯-11-醇(1·12 %)和α-没药醇(5·35 %)为倍半萜类化合物及其衍生物中的主要成分。

Fragmentation behavior of xanthones by tandem mass spectrometry and analysis of the constituents in four crude extracts from Halenia Elliptica D. Don Firstly, in order to find the relationship between the structural characterization and the mass spectrometric behavior, eight xanthones isolated from Halenia Elliptica D. Don and nine semi-synthetic xanthones was systematically investigated by positive and negative ion ESI-MS〓 and APCI-MS〓.

〓酮类化合物的质谱裂解规律及椭圆叶花锚活性提取物中相关成分的分析研究首先，采用正负离子两种检测模式下的ESI-MS〓和APCI-MS〓方法对从药用植物椭圆叶花锚中提取分离出来的8个〓酮类单体和9个〓酮类合成物进行了详细、深入的质谱裂解规律研究，考察了化合物结构与质谱行为之间的相关性。

Because of the herbicidal activities found in all the acrylate derivatives(3),they may be regarded as the lead herbicidal compounds to study further.

所合成的目标化合物3在2000g ai/hm2的剂量下均具有一定的除草活性，可作为除草活性的新型先导化合物供进一步优化研究。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。