more complicated than that of coniine; atropine, for example, is represented by the formula
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H H2
H2CCC CH2OH
| / \ |
| N—CH3 CH—O—CO—CH
| \ / |
H2CCC C6H5
H H2
The molecule of quinoline contains a benzene and a
pyridine nucleus condensed thus:—
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HC CH
\ C /
// \ / \\
HC || CH
HC || CH
\\ / \ //
\\/ C \//
HC N
Among the alkaloids of the quinoline group may be
mentioned those of cinchona bark and nux vomica.
The constitution of these alkaloids is very complex, and
in most cases but little understood. As an example of
the cinchona group quinine may be taken. Its structure
is probably
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CH
/ | \
/ | \
H2C CH2 CH—CH==CH2
| | |
H2C HO·C CH2
\ / | /
\/ | /
/\ | /
/ \ | /
CH2 N
/
HC C
// \ C / \\
CH3OC| \ / |CH
HC| | | |CH
\\ C \ //
HC N
the formula being C20H24N2O2. Quinine has not been
completely synthesised, but it has been prepared from
cupreine, another cinchona alkaloid. The strychnos
