The MeOH-soluble epidermal powder (2.0% yield, wlw, from the air-dried leaves of Chr, sempewirens) was scraped off from the leaf underside (Figure 1). The extract was purified on an hplc with an ods column to yield three major compounds:
1 (55.2% from the MeOH extract),
2 (18.0%), and 3 (6.8%). These three compounds in the samples collected in California and Oregon were distributed in a similar ratio.n m r spectra of 41 carbon signals including six C-0, 30 aromatic carbons, and five carboxylic ester or acid carbonyl carbonsintherange of864 through78,105 through 149,and 166through 171 ppm, respectively. In the similar 'H-nmr spectra (Table l), there were three characteristic singlet aromatic proton signals and
The MeOH-soluble epidermal powder (2.0% yield, wlw, from the air-dried leaves of Chr, sempewirens) was scraped off from the leaf underside (Figure 1). The extract was purified on an hplc with an ods column to yield three major compounds:1 (55.2% from the MeOH extract),2 (18.0%), and 3 (6.8%). These three compounds in the samples collected in California and Oregon were distributed in a similar ratio.n m r spectra of 41 carbon signals including six C-0, 30 aromatic carbons, and five carboxylic ester or acid carbonyl carbonsintherange of864 through78,105 through 149,and 166through 171 ppm, respectively. In the similar 'H-nmr spectra (Table l), there were three characteristic singlet aromatic proton signals and
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