石斛碱类生物碱（dendrobine-type alkaloids）

$化学结构：$

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\usepackage{chemfig}
\begin{document}
\chemfig[cram width=4pt]{
    *5(  % 外层五元环起始
        (-[6,0.2,,,transparent]11)(<:[0.7]18)-(-[0.3,0.3,,,transparent]6)(<:[7.5]R_3)
        (-[6](-[7.5,0.2,,,transparent]7)(<[3.3,0.6](=[2,0.5]O)(-[6,0.25,,,transparent]12))-[4.5](-[7.5,0.2,,,transparent]8)(<:[6](-[6,0.2,,,transparent]15)(-[7.3]16)(-[4.7]17)))
        -(-[,0.2,,,transparent]5)
        -(-[2,0.2,,,transparent]4)
        -(-[4.7,0.3,,,transparent]3)(<:[2]R_4)
        (  % 内层五元环的分支起始
            *5(  % 内层五元环起始
                -(-[4,0.2,,,transparent]2)(-R_1)
                -N(-[2,0.3,,,transparent]1)(-14)
                - (-[3.7,0.3,,,transparent]10)(<:[4.5]R_2)(
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                )
                --)  % 内层五元环结束
        )  % 内层五元环的分支结束
    )  % 外层五元环结束
}
\end{document}

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\usepackage{chemfig}
\begin{document}
\chemfig[cram width=4pt]{
    *5(  % 外层五元环起始
        (<:[0.7])-(<:[7.5]R_3)
        (-[6](<[3.3,0.6](=[2,0.5]O))-[4.5](<:[6](-[7.3])(-[4.7])))
        -
        -
        -(<:[2]R_4)
        (  % 内层五元环的分支起始
            *5(  % 内层五元环起始
                -(-R_1)
                -N(-)
                - (<:[4.5]R_2)(
                    -[6](<[0.5,0.8]O-[0,0.7,,,line width=3pt])-[7.5]
                )
                --)  % 内层五元环结束
        )  % 内层五元环的分支结束
    )  % 外层五元环结束
}
\end{document}

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\usepackage{chemfig}
\begin{document}
\chemfig[cram width=4pt]{
    *5(  % 外层五元环起始
        (-[6,0.2,,,transparent]11)(<:[0.7]18)-(-[0.3,0.3,,,transparent]6)(<:[7.5]R_3)
        (-[6.3](-[7.5,0.2,,,transparent]7)(<[4.7,1](=[6.5,0.8]O)(-[7.5,0.3,,,transparent]12))-[4.3,1.2](-[2,0.2,,,transparent]8)(<:[6](-[6,0.2,,,transparent]15)(-[7.3]16)(-[4.7]17)))
        -(-[,0.2,,,transparent]5)
        -(-[2,0.2,,,transparent]4)
        -(-[4.7,0.3,,,transparent]3)(<:[2]R_4)
        (  % 内层五元环的分支起始
            *5(  % 内层五元环起始
                -(-[4,0.2,,,transparent]2)(-R_1)
                -N(-[2,0.3,,,transparent]1)(-14)
                - (-[3.7,0.3,,,transparent]10)(<:[4.5]R_2)(
                    -[5.7](-[4.5,0.2,,,transparent]9)(<[7.3,1]O(-[6,0.25,,,transparent]13)-[0,0.7,,,line width=3pt])-[7.7,1.2]
                )
                --)  % 内层五元环结束
        )  % 内层五元环的分支结束
    )  % 外层五元环结束
}
\end{document}

-

\usepackage{chemfig}
\begin{document}
\chemfig[cram width=4pt]{
    *5(  % 外层五元环起始
        (<:[0.7])-(<:[7.5]R_3)
        (-[6.3](<[4.7,1](=[6.5,0.8]O))-[4.3,1.2](<:[6](-[7.3])(-[4.7])))
        -
        -
        -(<:[2]R_4)
        (  % 内层五元环的分支起始
            *5(  % 内层五元环起始
                -(-R_1)
                -N(-)
                -(<:[4.5]R_2)(
                    -[5.7](<[7.3,1]O-[0,0.7,,,line width=3pt])-[7.7,1.2]
                )
                --)  % 内层五元环结束
        )  % 内层五元环的分支结束
    )  % 外层五元环结束
}
\end{document}

| | {1}$ | {2}$ | {3}$ | {4}$ | | ------------------------------------------- | --------------------------------------------- | ------- | ------- | ------- | | [[石斛碱（dendrobine）]] | H | H | H | H | | [[石斛胺碱（dendramine）]] | H | H | OH | H | | [[10-羟基 石斛碱（10-hydroxydendrobine）]] | H | OH | H | H | | [[石斛脂碱（dendrine）]] | ![[0. 石斛碱类生物碱（dendrobine-type alkaloids）#^0]] | H | H | H | | [[3-羟基-2-氧-石斛碱（3-hydroxy-2-oxydendrobine）]] | O | H | H | OH |

附录

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\usepackage{chemfig}
\begin{document}
\chemfig{
-[1](=[2.5]O)(-O-[7]CH_3)
}
\end{document}

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