Piper retrofractum is an economically and medicinally important species in the genus Piper
(Piperaceae). The fruit extract has been reported to possess various bioactivities such as …

Bioassay-guided fractionation of the ethanol extract of the roots and rhizomes of Veratrum
taliense yielded two new and thirteen known steroidal alkaloids. The structures of the two …

A new tremulane sesquiterpene, ceriponol P, has been isolated from the cultures of
Ceriporia lacerate, together with three known metabolites 3-indolecarbaldehyde, 3-methyl-2 …

Four new diketopiperazine alkaloids, citriperazines AD were isolated from algae-derived
Penicillium sp. KMM 4672. The structures of compounds 1–4 were determined using …

Twenty-seven (Z)-and (E)-verbenone derivatives bearing an oxime ester moiety were
designed and synthesized in search of novel bioactive molecules. Their structures were …

A new pyrrolyl 4-quinolinone alkaloid with an unprecedented ring system, named
penicinoline (1) was isolated from a mangrove endophytic fungus. The structure of 1 was …

Two previously undescribed pyrrolizine alkaloids, named phenopyrrolizins A and B (1 and
2), were obtained from the fermentation broth of marine-derived Micromonospora sp …

To find new pesticidal lead compounds with high bioactivity, 26 new pyrazines emicarbazide
derivatives were designed and synthesized by combining with the pyrazine ring and …

Six previously unreported papulacandins, namely pestiorosins A–F (1–6), were isolated
from the fermentation products of the fungus Pestalotiopsis rosea YNJ21 isolated from the …

A new phytotoxic unrearranged ent-pimaradiene diterpene, named chenopodolin, was
isolated from the liquid culture of Phoma chenopodicola, a fungal pathogen proposed for the …