Pheophytin analogues from the medicinal lichen Usnea diffracta
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DOI: 10.1080/14786419.2017.1380019
Abstract: Abstract A new pheophytin, (132S, 17S, 18S)-132-hydroxy-20-chloro-ethylpheophorbide a (3), along with two known analogues (1–2) were isolated from the lichen Usnea diffracta Vainio (Parmeliaceae). Among them, compound 3 was a rare C-20-chloro type pheophytin obtained… read more here.
Keywords: lichen usnea; usnea diffracta; pheophytin; analogues medicinal ... See more keywords