31505-22-3Relevant academic research and scientific papers
Phenolic glucosides and chromane analogs from the insect fungus Conoideocrella krungchingensis BCC53666
Sadorn, Karoon,Saepua, Siriporn,Boonyuen, Nattawut,Komwijit, Somjit,Rachtawee, Pranee,Pittayakhajonwut, Pattama
, p. 3463 - 3471 (2019)
Six new compounds, named conoideoglucosides A ? C and conoideochromanes A ? C, together with eight known compounds, including eutypinic acid, 2,2-dimethyl-2H-1-chromene-6-carboxylic acid, (?)-luteoskyrin, (?)-4a-oxyluteoskyrin, chrysophanol, islandicin, c
Antimicrobial, antimalarial, and cytotoxic substances from the insect pathogenic fungus Beauveria asiatica BCC 16812
Kornsakulkarn, Jittra,Pruksatrakul, Thapanee,Surawatanawong, Panida,Thangsrikeattigun, Chattawat,Komwijit, Somjit,Boonyuen, Nattawut,Thongpanchang, Chawanee
, p. 8 - 15 (2021/03/14)
Six new compounds 1–6 and two new naturally occurring compounds 7 and 8, together with nine known compounds 9–14, beauverioride I, dipicolinic acid, and 6-(methoxycarbonyl) picolinic acid were isolated from a wasp-pathogenic fungus Beauveria asiatica, strain BCC 16812. Their structures were determined by extensive spectroscopic analyses. The absolute configurations of compound 6 were established by the application of modified Mosher's method and ECD calculation. Compounds 9–11 exhibited antimalarial (IC50 0.47–1.79 u g/mL), antimicrobial (MIC 3.13–50.0 u g/mL), and cytotoxic (IC50 0.26–1.23 u g/mL) activities, while compounds 1, 2, 8, and 14 showed only cytotoxicity against Vero cell lines, with IC50 values range 12.96–47.03 u g/mL.
Bioactive compounds from the scale insect fungus Conoideocrella tenuis BCC 44534
Saepua, Siriporn,Kornsakulkarn, Jittra,Somyong, Wiwat,Laksanacharoen, Pattiyaa,Isaka, Masahiko,Thongpanchang, Chawanee
, p. 859 - 866 (2018/01/17)
Eleven new compounds, including two quinone derivatives of bioxanthracene, conoideocrellones A (1) and B (2), two bioxanthracenes 3 and 4, four isocoumarins and isocoumarin glycosides 7–10, two phenolic compounds 16 and 17, and a diterpenoid compound, conoideocin A (18), were isolated from culture of the scale-insect pathogenic fungus Conoideocrella tenuis BCC 44534. Seventeen known compounds, compounds 5 and 6, ES-242-2 and its atropisomer, isocoumarins and isocoumarin glycosides 11–15, 3,4,6-trihydroxymellein, cis-4,6-dihydroxymellein, metarhizins A (19) and B (20), BR-050 (21), 5α,8α-epidioxy-24(R)-methylcholesta-6,22-dien-3β-ol, zeorin, and conoideocrellide A, were also isolated from this fungus. Structures of these compounds were elucidated by NMR and MS data analyses. Compound 4 was active against Plasmodium falciparum K1 (IC50 6.6 μg/mL), while it did not show cytotoxicity. Conoideocrellone A (1) and compounds 3 and 7 exhibited cytotoxic activity, while conoideocin A (18) showed broad range of biological activities including antimalarial, antibacterial, and cytotoxic activities.
N-Hydroxypyridone alkaloids, chromone derivatives, and tetrahydroxanthones from the scale-insect pathogenic fungus Orbiocrella sp. BCC 33248
Isaka, Masahiko,Haritakun, Rachada,Supothina, Sumalee,Choowong, Wilunda,Mongkolsamrit, Suchada
, p. 9198 - 9203 (2017/09/08)
Six new compounds, an N-hydroxypyridone glucoside, orbiocrellin A (1), its aglycone orbiocrellin B (2), chromone glucosides 3 and 4, a dihydrochromone 5a/5b, and a chromone 6, were isolated from the scale-insect pathogenic fungus Orbiocrella sp. BCC 33248. Orbiocrellin A (1) exhibited antimalarial activity against Plasmodium falciparum K1 (IC50 3.1 μg/mL) while it was non-cytotoxic. In contrast, orbiocrellin B (2) showed both antimalarial (IC50 2.1 μg/mL) and cytotoxic (NCI-H187 cells, IC50 0.70 μg/mL) activities.
Isocoumarin glucosides from the scale insect fungus Torrubiella tenuis BCC 12732
Kornsakulkarn, Jittra,Thongpanchang, Chawanee,Lapanun, Sanisa,Srichomthong, Kitlada
experimental part, p. 1341 - 1343 (2010/02/28)
Three new isocoumarin glucosides (1, 3, and 4), 6,8-dihydroxy-3- methylisocoumarin (2), and 6,8-dihydroxy-3-hydroxymethylisocoumarin (5) were isolated from the scale insect pathogenic fungus Torrubiella tenuis BCC 12732. Structures of these compounds were
Chemische und Chemotaxonomische Untersuchungen von Filices. XL. Chemische Untersuchungen der Inhaltsstoffe von Microlepia marginata (Panzer) C. CHR.
Kuraishi, Tadayuki,Taniguchi, Takao,Murakami, Takao,Tanaka, Nobutoshi,Saiki, Yasuhisa,Chenc, Chiu-Ming
, p. 1494 - 1501 (2007/10/02)
From the fronds of Microlepia marginata (Panzer) C.Chr. five new ent-kaurane type diterpene glycosides, microlepin(I), 17-O-acetylmicrolepin(VIII), 6'-O-acetylmicrolepin(IX), 4-epi-microlepin(X) and 6'-O-α-L-rhamnopyranosyl-4-epi-microlepin(XVIII) were isolated and their structures were elucidated by spectroscopic methods and some chemical reactions.Microlepin and 4-epi-microlepin possesses the structures 16α,17,19-trihydroxy-ent-kaurane 19-O-β-(4'-O-methyl)-D-glucopyranoside and 16α,17,18-trihydroxy-ent-kaurane 18-O-β-(4'-O-methyl)-D-glucopyranoside. Keywords---Microlepia marginata; fern; chemotaxonomy; ent-kaurane glycoside; spectroscopic method; chemical reaction
