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    首页 分子通 按分子结构分类 有机化合物 有机杂环化合物 异吲哚及其衍生物

    异吲哚及其衍生物

    中文名称 英文名称 CAS号 化学式 结构式图片
    —— (1R,2S,6R,7S,8S,10S)-4-[(Z)-[2-[(2-chlorophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C25H21ClN2O3
    (1R,2S,6R,7S,8S,10S)-4-[(Z)-[2-[(2-chlorophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2R,6S,7R,8S,10S)-4-[(Z)-[5-(5-chloro-2-methoxyphenyl)furan-2-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C23H19ClN2O4
    (1R,2R,6S,7R,8S,10S)-4-[(Z)-[5-(5-chloro-2-methoxyphenyl)furan-2-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6R,7S,8S,10S)-4-[(Z)-[5-chloro-2-[(3-chlorophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C25H20Cl2N2O3
    (1R,2S,6R,7S,8S,10S)-4-[(Z)-[5-chloro-2-[(3-chlorophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6S,7R,8S,10S)-4-[(Z)-[2-[(2-chlorophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C25H21ClN2O3
    (1R,2S,6S,7R,8S,10S)-4-[(Z)-[2-[(2-chlorophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2R,6S,7R,8S,10S)-4-[(Z)-(2-propan-2-yloxynaphthalen-1-yl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C25H24N2O3
    (1R,2R,6S,7R,8S,10S)-4-[(Z)-(2-propan-2-yloxynaphthalen-1-yl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6R,7S,8S,10S)-4-[(Z)-(2-propan-2-yloxynaphthalen-1-yl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C25H24N2O3
    (1R,2S,6R,7S,8S,10S)-4-[(Z)-(2-propan-2-yloxynaphthalen-1-yl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6R,7R,8S,10S)-4-[(Z)-(3-chloro-5-ethoxy-4-prop-2-ynoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C23H21ClN2O4
    (1R,2S,6R,7R,8S,10S)-4-[(Z)-(3-chloro-5-ethoxy-4-prop-2-ynoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1S,2R,6S,7R,8S,10S)-4-[(Z)-(3-bromo-4-ethoxy-5-methoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C21H21BrN2O4
    (1S,2R,6S,7R,8S,10S)-4-[(Z)-(3-bromo-4-ethoxy-5-methoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— 2-[5-[(Z)-[(1R,2S,6R,7S,8S,10S)-3,5-dioxo-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-en-4-yl]iminomethyl]furan-2-yl]benzonitrile —— C23H17N3O3
    2-[5-[(Z)-[(1R,2S,6R,7S,8S,10S)-3,5-dioxo-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-en-4-yl]iminomethyl]furan-2-yl]benzonitrile
    —— (1R,2S,6R,7R,8S,10S)-4-[(Z)-(5-chloro-2-ethoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C20H19ClN2O3
    (1R,2S,6R,7R,8S,10S)-4-[(Z)-(5-chloro-2-ethoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1S,2R,6S,7R,8S,10S)-4-[(Z)-[5-(3-chloro-4-methylphenyl)furan-2-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C23H19ClN2O3
    (1S,2R,6S,7R,8S,10S)-4-[(Z)-[5-(3-chloro-4-methylphenyl)furan-2-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6S,7R,8S,10S)-4-[(Z)-(3-chloro-5-ethoxy-4-prop-2-ynoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C23H21ClN2O4
    (1R,2S,6S,7R,8S,10S)-4-[(Z)-(3-chloro-5-ethoxy-4-prop-2-ynoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6R,7R,8S,10S)-4-[(E)-(4-chloro-3-nitrophenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C18H14ClN3O4
    (1R,2S,6R,7R,8S,10S)-4-[(E)-(4-chloro-3-nitrophenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6S,7S,8S,10S)-4-[(Z)-[5-(4-fluorophenyl)furan-2-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C22H17FN2O3
    (1R,2S,6S,7S,8S,10S)-4-[(Z)-[5-(4-fluorophenyl)furan-2-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6S,7R,8S,10S)-4-[(Z)-[5-(3-chloro-4-methylphenyl)furan-2-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C23H19ClN2O3
    (1R,2S,6S,7R,8S,10S)-4-[(Z)-[5-(3-chloro-4-methylphenyl)furan-2-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2R,6S,7R,8S,10S)-4-[(Z)-[2-[(4-bromophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C25H21BrN2O3
    (1R,2R,6S,7R,8S,10S)-4-[(Z)-[2-[(4-bromophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6S,7R,8S,10S)-4-[(Z)-(4-chloro-3-nitrophenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C18H14ClN3O4
    (1R,2S,6S,7R,8S,10S)-4-[(Z)-(4-chloro-3-nitrophenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6R,7S,8S,10S)-4-[(3-ethoxy-5-nitro-4-oxocyclohexa-2,5-dien-1-ylidene)methylamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C20H19N3O6
    (1R,2S,6R,7S,8S,10S)-4-[(3-ethoxy-5-nitro-4-oxocyclohexa-2,5-dien-1-ylidene)methylamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6S,7S,8S,10S)-4-[(Z)-[2-[(2-chlorophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C25H21ClN2O3
    (1R,2S,6S,7S,8S,10S)-4-[(Z)-[2-[(2-chlorophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6S,7R,8S,10S)-4-[(Z)-[5-chloro-2-[(3-chlorophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C25H20Cl2N2O3
    (1R,2S,6S,7R,8S,10S)-4-[(Z)-[5-chloro-2-[(3-chlorophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6R,7R,8S,10S)-4-[(Z)-[3-bromo-5-methoxy-4-[(4-nitrophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C26H22BrN3O6
    (1R,2S,6R,7R,8S,10S)-4-[(Z)-[3-bromo-5-methoxy-4-[(4-nitrophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6R,7R,8S,10S)-4-[(E)-(5-chloro-2-ethoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C20H19ClN2O3
    (1R,2S,6R,7R,8S,10S)-4-[(E)-(5-chloro-2-ethoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6S,7R,8S,10S)-4-[(Z)-(5-chloro-2-ethoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C20H19ClN2O3
    (1R,2S,6S,7R,8S,10S)-4-[(Z)-(5-chloro-2-ethoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (3aR,4R,7aR)-2-(2,3-dihydro-1H-inden-5-yl)-4-methyl-3a,4,7,7a-tetrahydroisoindole-1,3-dione —— C18H19NO2
    (3aR,4R,7aR)-2-(2,3-dihydro-1H-inden-5-yl)-4-methyl-3a,4,7,7a-tetrahydroisoindole-1,3-dione
    —— (1R,2S,6R,7R,8S,10S)-4-[(Z)-[5-(3-chloro-4-methylphenyl)furan-2-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C23H19ClN2O3
    (1R,2S,6R,7R,8S,10S)-4-[(Z)-[5-(3-chloro-4-methylphenyl)furan-2-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2R,6S,7R,8S,10S)-4-[(Z)-[1-[(2-chlorophenyl)methyl]-2-methylindol-3-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C28H24ClN3O2
    (1R,2R,6S,7R,8S,10S)-4-[(Z)-[1-[(2-chlorophenyl)methyl]-2-methylindol-3-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2R,6R,7R)-10-propan-2-ylidene-4-(pyridin-3-ylmethyl)-4-azatricyclo[5.2.1.02,6]dec-8-ene-3,5-dione —— C18H18N2O2
    (1R,2R,6R,7R)-10-propan-2-ylidene-4-(pyridin-3-ylmethyl)-4-azatricyclo[5.2.1.02,6]dec-8-ene-3,5-dione
    —— (1R,2S,6S,7R)-4-pyridin-3-yl-4-azatricyclo[5.2.1.02,6]dec-8-ene-3,5-dione —— C14H12N2O2
    (1R,2S,6S,7R)-4-pyridin-3-yl-4-azatricyclo[5.2.1.02,6]dec-8-ene-3,5-dione
    —— (1R,2S,6S,7R,8S,10S)-4-[(Z)-[3-bromo-5-methoxy-4-[(4-nitrophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C26H22BrN3O6
    (1R,2S,6S,7R,8S,10S)-4-[(Z)-[3-bromo-5-methoxy-4-[(4-nitrophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2R,6S,7R,8S,10S)-4-[(3-ethoxy-5-nitro-4-oxocyclohexa-2,5-dien-1-ylidene)methylamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C20H19N3O6
    (1R,2R,6S,7R,8S,10S)-4-[(3-ethoxy-5-nitro-4-oxocyclohexa-2,5-dien-1-ylidene)methylamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2R,6S,7R,8S,10S)-4-[(Z)-[5-chloro-2-[(3-chlorophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C25H20Cl2N2O3
    (1R,2R,6S,7R,8S,10S)-4-[(Z)-[5-chloro-2-[(3-chlorophenyl)methoxy]phenyl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6R,7R,8S,10S)-4-[(Z)-(3-bromo-4-ethoxy-5-methoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C21H21BrN2O4
    (1R,2S,6R,7R,8S,10S)-4-[(Z)-(3-bromo-4-ethoxy-5-methoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1S,2R,6S,7R,8S,10S)-4-[(Z)-(3-bromo-4-methoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C19H17BrN2O3
    (1S,2R,6S,7R,8S,10S)-4-[(Z)-(3-bromo-4-methoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6S,7S,8S,10S)-4-[(Z)-(4-methylphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C19H18N2O2
    (1R,2S,6S,7S,8S,10S)-4-[(Z)-(4-methylphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— methyl N-[[(1R,2S,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]methyl]carbamate —— C12H14N2O4
    methyl N-[[(1R,2S,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]methyl]carbamate
    —— (1R,2S,6S,7R,8S,10S)-4-[(E)-(5-chloro-2-ethoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C20H19ClN2O3
    (1R,2S,6S,7R,8S,10S)-4-[(E)-(5-chloro-2-ethoxyphenyl)methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— (1R,2S,6S,7R,8S,10S)-4-[(Z)-[5-(4-fluorophenyl)furan-2-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C22H17FN2O3
    (1R,2S,6S,7R,8S,10S)-4-[(Z)-[5-(4-fluorophenyl)furan-2-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— methyl N-[[(1R,2R,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]methyl]carbamate —— C12H14N2O4
    methyl N-[[(1R,2R,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]methyl]carbamate
    —— (1R,2S,6S,7R)-4-anilino-4-azatricyclo[5.2.1.02,6]dec-8-ene-3,5-dione —— C15H14N2O2
    (1R,2S,6S,7R)-4-anilino-4-azatricyclo[5.2.1.02,6]dec-8-ene-3,5-dione
    —— methyl N-[(1S)-1-[(1R,2R,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]ethyl]carbamate —— C13H16N2O4
    methyl N-[(1S)-1-[(1R,2R,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]ethyl]carbamate
    —— 1-[[(1R,2S,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]methyl]-3-pyridin-3-ylurea —— C16H16N4O3
    1-[[(1R,2S,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]methyl]-3-pyridin-3-ylurea
    —— N-[2-[(1R,2R,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]ethyl]piperidine-1-carboxamide —— C17H23N3O3
    N-[2-[(1R,2R,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]ethyl]piperidine-1-carboxamide
    —— N-[2-[(1R,2S,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]ethyl]piperidine-1-carboxamide —— C17H23N3O3
    N-[2-[(1R,2S,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]ethyl]piperidine-1-carboxamide
    —— (1S,5R,6S,7S)-3-[(2-chlorophenyl)methyl]-N-[2-[(2S,6S)-2,6-dimethylpiperidin-1-yl]ethyl]-4-oxo-10-oxa-3-azatricyclo[5.2.1.01,5]dec-8-ene-6-carboxamide —— C25H32ClN3O3
    (1S,5R,6S,7S)-3-[(2-chlorophenyl)methyl]-N-[2-[(2S,6S)-2,6-dimethylpiperidin-1-yl]ethyl]-4-oxo-10-oxa-3-azatricyclo[5.2.1.01,5]dec-8-ene-6-carboxamide
    —— (1R,2S,6R,7R,8S,10S)-4-[(Z)-[5-(4-fluorophenyl)furan-2-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione —— C22H17FN2O3
    (1R,2S,6R,7R,8S,10S)-4-[(Z)-[5-(4-fluorophenyl)furan-2-yl]methylideneamino]-4-azatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione
    —— methyl N-[(1R)-1-[(1R,2R,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]ethyl]carbamate —— C13H16N2O4
    methyl N-[(1R)-1-[(1R,2R,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]ethyl]carbamate
    —— (1S,2S,6R,7S)-4-[(Z)-(5-methylfuran-2-yl)methylideneamino]spiro[4-azatricyclo[5.2.1.02,6]dec-8-ene-10,1'-cyclopropane]-3,5-dione —— C17H16N2O3
    (1S,2S,6R,7S)-4-[(Z)-(5-methylfuran-2-yl)methylideneamino]spiro[4-azatricyclo[5.2.1.02,6]dec-8-ene-10,1'-cyclopropane]-3,5-dione
    —— methyl N-[(1S)-1-[(1R,2S,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]ethyl]carbamate —— C13H16N2O4
    methyl N-[(1S)-1-[(1R,2S,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]ethyl]carbamate
    —— (3aR,7aS)-2-[(1R,2R,5R)-4-oxo-6,8-dioxabicyclo[3.2.1]octan-2-yl]-3a,4,7,7a-tetrahydroisoindole-1,3-dione —— C14H15NO5
    (3aR,7aS)-2-[(1R,2R,5R)-4-oxo-6,8-dioxabicyclo[3.2.1]octan-2-yl]-3a,4,7,7a-tetrahydroisoindole-1,3-dione
    —— 1-[(1R)-1-[(1R,2S,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]ethyl]-3-pyridin-2-ylurea —— C17H18N4O3
    1-[(1R)-1-[(1R,2S,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]ethyl]-3-pyridin-2-ylurea