OOIR: Observatory of International Research

Papers

(The H4-Index of Phytochemistry is 32. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-08-01 to 2025-08-01.)

Article	Citations
Four pairs of neolignan enantiomers with distinctive isochroman moiety from the fruits of Crataegus pinnatifida and their protective activities against H2O2-induced SH-SY5Y cells	188
Chermesins I-N: Bioactive spiromeroterpenoids from the marine-sourced fungus Penicillium chermesinum AS-400	128
Artemordosins A−L, cadinane-monoterpene heterodimers and sesquiterpenoids with antihepatoma activity from Artemisia ordosica	128
Chevalierlin: A spirocyclic alkaloid from a hydrothermal vent associated fungus Aspergillus chevalieri TW132-65	78
Density functional theory study on the coupling and reactions of diferuloylputrescine as a lignin monomer	71
Antioxidant micropeptins from a Microcoleus autumnalis-dominated benthic cyanobacterial mat from Western Ireland	69
Penigrines A−E: Five undescribed azepine-indole alkaloids from Penicillium griseofulvum	66
Characteristic chromanone acids from Calophyllum membranaceum: Determination of C-3 configuration and anti-inflammatory activity	53
Secotrijugins A−D, four highly oxidized and rearranged limonoids from Trichilia sinensis and their anti-inflammatory activity	45
Genetic diversity and biochemical analysis of Capsicum annuum (Bell pepper) in response to root and basal rot disease, Phytophthora capsici	44
Vitislactone, a non-canonical strigolactone exudated by grapevine rootstocks in response to nitrogen starvation	44
Editorial Board/Publication Information	43
Editorial Board/Publication Information	43
Graphical Contents List	43
Diterpenoid alkaloids from Delphinium trichophorum	42
Functional characterization of a small gene family coding for putrescine hydroxycinnamoyltransferases, involved in phenolamide accumulation, in tomato	42
Rosmarinic acid and hesperidin regulate gas exchange, chlorophyll fluorescence, antioxidant system and the fatty acid biosynthesis-related gene expression in Arabidopsis thaliana under heat stress	41
Six C21 steroidal glycosides from Cynanchum wallichii Wight roots and their multidrug resistance reversal activities	40
Eugenilones A−N: sesquiterpenoids from the fruits of Eugenia uniflora	39
Metabolic fingerprinting of Ganoderma spp. using UHPLC-ESI-QTOF-MS and its chemometric analysis	38
Isolation of undescribed cladosporols and spirobisnaphthalenes from a plant pathogen Cladosporium cladosporioides F-10-2-A	38
Triterpenoids with multi-skeletons as 11 β -HSD1 inhibitors from Euphorbia sikkimensis	37
Cytotoxic monoterpenoid indole alkaloids from Tabernaemontana bovina	37
Sesquiterpenes from Carpesium faberi triggered ROS-induced apoptosis and protective autophagy in hepatocellular carcinoma cells	36
Globunoids A−D, undescribed bichalconoid and biflavanoids with -glucosidase and -amylase inhibitory activities from stems	35

Cannabinoid-like meroterpenoids from Peperomia incana	34
Organ-specific volatiles from Sonoran desert Krameria flowers as potential signals for oil-collecting bees	34
Steroidal alkaloids from Solanum nigrum and their cytotoxic activities	34
Dimeric diarylheptanoids with anti-inflammatory activity from Zingiber officinale	33
Seasonal variation of phenolic compounds in Zostera marina (Zosteraceae) from the Baltic Sea	33
Integrative analysis of metabolome and transcriptome reveals the improvements of seed quality in vegetable soybean (Glycine max (L.) Merr.)	32
Bioactive constituents from the leaves of Metapanax delavayi with anti-benign prostatic hyperplasia activities	32