13. CH 2 groups were replaced by NH or o and vice versa, nitro groups became carboxylic acids and amides, OH groups became fluorine atoms; the list is extensive.
甲烷2组改为NH或O和反之亦然，硝基成为羧酸和酰胺，OH基团成为氟原子，该名单是广泛的。
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14. Amides are also widely spread all over the nature, such as protein is the polymer linkaged with amide bond, it is also the hydrolysis intermediate of nitrile.
酰胺广泛分布于自然界，如蛋白质是以酰胺键-CONH-相连的天然高分子化合物等；
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15. Many new compounds can be obtained by addition with water, hydrogen, alcohols, phenols, amines, amides, carboxylic acids, olefins, aldehydes, ketones, esters, etc.
与水、活性氢、醇、酚、胺、酰胺、羧酸、烯烃、醛、酮、酯加成得到的新化合物，可作脱水剂和氧化剂使用。
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16. Aryl or heteroaryl amides of tetrahydronaphthalene, chroman, thiochroman and 1,2,3,4-tetrahydroquinoline carboxylic acids having retinoid-like biological activity.
17. The main components of Zanthoxylum are volatile oils, alkaloids, amides, etc. The contents and constituents of these materials from different species or habitats are greatly different.
花椒中富含挥发油、植物碱、酰胺类物质等，因品种、产地的不同这些物质组分和含量有较大区别。
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18. Endogenous cannabinoids (endocannabinoids), which are synthesized from lipid precursors in plasma membranes, are signaling lipids consisting of amides and esters of long chain fatty acids.
内源性大麻素物质来源于细胞膜上的脂类前体物质，具有脂类物质的特征，包括氨基化合物和长链脂肪酸。
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19. The photoinduced electron transfer reaction between N-tosyl amides and 2-phenyl-N, N'-dimethyl benzimidazoline (PDMBI) provides an efficient approach for the deprotection of N-tosyl amides.
20. The photoinduced electron transfer reaction between N-tosyl amides and 2-phenyl-N, N'-dimethyl benzimidazoline (PDMBI) provides an efficient approach for the deprotection of N-tosyl amides.
