Plant Anticancer Agents XXXIX: Triterpenes from Iris Missouriensis (Iridaceae)

Chemical taxonomy of Torrubiella s. lat.: zeorin as a marker of Conoideocrella

“…Zeorin (Tsuda et al 1967) has been isolated from liverworts (Bard on et al 1999, 2002, Toyota and Asakawa 1993 and other vascular plants (Wong et al 1986;Inayama et al 1989;Wu et al 1990;Shiojima and Ageta 1994). There are a few reports of zeorin isolation or detection from lichen extracts (Shibata et al 1965, Yoshioka et al 1966, although it is not clear whether the mycobiont is the producer.…”

Three triterpenoids and one flavonoid from the liverwort Asterella blumeana grown in vitro

“…The 1 H-and 13 C-NMR of this compound were very similar to the spectra of 1, but in the case of 2, in 13 C-NMR a carbon at 69.3 ppm (corresponding to an oxygenated methine) was detected. By comparison with literature data (Mahato and Kundu, 1994;Wong et al, 1986;Elix et al, 1982), 2 was identified as zeorine (6a, 22-dihydroxyhopane). Elix et al (1982) reported the isolation of this compound from the lichen Heterodermia tremulans and Morais (1990) described its isolation from the liverwort Reboulia hemispheaerica.…”

Cytotoxic and Antiviral Compounds from Bryophytes and Inedible Fungi

“…A new atisane-2 derivative (60) from Lepidolaena clavigera exhibited weak inhibitory activity against mouse lymphocytic leukemia cells (P-388) with an IC 50 value of 16 mg/mL [35] [35]. a-Zeorin (61) has been isolated from several liverworts and displayed cytotoxic activity against P-388 cells with an IC 50 of 1.1 mg/ml [36,37]. (27) and tulipinolide (67) were obtained and the former germacranolide shown to be cytotoxic against the HL-60 cell line (IC 50 4.6 mM) [38].…”