Some Major Steps in the Understanding of the Chemistry and Biochemistry of Chl - Chlorophyll Biosynthesis and Technological Applications - page 5

1.1.18 Noack and Kiessling, 1929, 1930
In 1929 and 1930, Noack and Kiessling, initiated the study of the protochlorophyll
chemistry of pumpkin seed coat (Noack and Kiessling 1929 , 1930 ). These studies
led to the erroneous assumption that protochlorophyll (i.e. esterified protochloro-
phyllide) is the immediate precursor of Chl.
1.1.19 Frank Capra, 1932
In 1932, in the academy award winning movie, You Can't Take It With You, it was
emphasized that the understanding of photosynthesis which is catalyzed by Chl
could usher an era of vast abundance.
1.1.20 Noack and Schneider, 1933
In 1933, Noack and Schneider, started the study of bacteriochlorophyll (Noack
and Scneider 1933 ).
1.1.21 Fischer and Stern, 1935
In 1935, Fischer and Stern, proposed a structure for Chl (Fischer and Stern 1935 ).
The structural formula for Chl was correct, except for the position of the two extra
hydrogens which are now recognized to be located on ring IV at positions 7 and 8 of
the macrocycle.
1.1.22 Fischer and Orth, 1937
In 1937, Fischer and Orth published the first part of a monograph about Chl
chemistry that described the various research findings of Fischer and collaborators
that resulted in our modern understanding of the structure of Chl and its degradation
products (Fischer and Orth 1937 ).