IRIS
Pietra, Francesco
 Distribuzione geografica
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Continente #
NA - Nord America 10.242
AS - Asia 3.639
EU - Europa 2.714
SA - Sud America 594
AF - Africa 65
Continente sconosciuto - Info sul continente non disponibili 49
OC - Oceania 13
Totale 17.316
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Nazione #
US - Stati Uniti d'America 10.124
SG - Singapore 1.664
CN - Cina 805
VN - Vietnam 672
UA - Ucraina 581
BR - Brasile 488
RU - Federazione Russa 372
SE - Svezia 358
FI - Finlandia 305
FR - Francia 202
IT - Italia 175
LV - Lettonia 170
GB - Regno Unito 164
DE - Germania 135
BG - Bulgaria 125
KR - Corea 109
IN - India 91
CA - Canada 54
AR - Argentina 46
BD - Bangladesh 39
HK - Hong Kong 39
IQ - Iraq 35
MX - Messico 34
JO - Giordania 25
PK - Pakistan 25
PL - Polonia 25
ES - Italia 24
JP - Giappone 23
NL - Olanda 19
ID - Indonesia 18
ZA - Sudafrica 18
EC - Ecuador 16
TR - Turchia 15
CO - Colombia 13
IL - Israele 11
CL - Cile 10
EG - Egitto 9
PH - Filippine 9
TH - Thailandia 9
AU - Australia 8
JM - Giamaica 8
PE - Perù 8
BY - Bielorussia 7
AZ - Azerbaigian 6
KE - Kenya 6
PT - Portogallo 6
SA - Arabia Saudita 6
AE - Emirati Arabi Uniti 5
CI - Costa d'Avorio 5
HR - Croazia 5
LT - Lituania 5
MA - Marocco 5
OM - Oman 5
RO - Romania 5
VE - Venezuela 5
CH - Svizzera 4
CR - Costa Rica 4
ET - Etiopia 4
IE - Irlanda 4
NZ - Nuova Zelanda 4
PY - Paraguay 4
TT - Trinidad e Tobago 4
TW - Taiwan 4
UZ - Uzbekistan 4
ZW - Zimbabwe 4
AL - Albania 3
DO - Repubblica Dominicana 3
DZ - Algeria 3
GA - Gabon 3
GR - Grecia 3
KG - Kirghizistan 3
LB - Libano 3
SK - Slovacchia (Repubblica Slovacca) 3
TN - Tunisia 3
AO - Angola 2
BB - Barbados 2
BH - Bahrain 2
CZ - Repubblica Ceca 2
HN - Honduras 2
HU - Ungheria 2
MD - Moldavia 2
MY - Malesia 2
NI - Nicaragua 2
NP - Nepal 2
QA - Qatar 2
SY - Repubblica araba siriana 2
UY - Uruguay 2
AT - Austria 1
BE - Belgio 1
BN - Brunei Darussalam 1
BO - Bolivia 1
BW - Botswana 1
DK - Danimarca 1
EE - Estonia 1
EU - Europa 1
GD - Grenada 1
GP - Guadalupe 1
GT - Guatemala 1
GY - Guiana 1
IR - Iran 1
Totale 17.257
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Città #
Jacksonville 1.268
Singapore 1.099
Chandler 884
Fairfield 799
Ashburn 712
Columbus 430
San Jose 425
Woodbridge 407
Dallas 388
Santa Clara 340
Seattle 330
Wilmington 329
Princeton 307
San Mateo 280
Houston 269
Cambridge 253
Ann Arbor 222
Moscow 204
Ho Chi Minh City 193
Council Bluffs 180
Hanoi 174
Riga 170
New York 169
Lauterbourg 147
Beijing 139
Boardman 128
Sofia 122
Dearborn 120
Helsinki 116
Los Angeles 104
Seoul 104
The Dalles 88
Hefei 84
Buffalo 72
Da Nang 50
São Paulo 50
Munich 42
San Diego 42
London 36
Lawrence 32
Milan 30
Redondo Beach 30
Orem 27
Düsseldorf 26
Haiphong 26
Norwalk 26
Bremen 24
Hong Kong 24
Chicago 23
Guangzhou 22
Warsaw 21
Chennai 20
Turku 20
Falls Church 19
Fremont 19
Phoenix 19
Toronto 19
Tokyo 18
Andover 17
Johannesburg 17
Rio de Janeiro 17
Denver 16
Nanjing 16
Brooklyn 15
Des Moines 15
Shanghai 15
Kunming 14
Verona 14
Hải Dương 13
Paris 13
Trento 13
Brasília 12
Jinan 12
Rome 12
Stockholm 12
Atlanta 11
Baghdad 11
Belo Horizonte 11
Biên Hòa 11
Bến Tre 11
Porto Alegre 11
San Paolo di Civitate 11
Boston 10
Lahore 10
Nha Trang 10
San Francisco 10
Thái Nguyên 10
Buenos Aires 9
Campinas 9
Izmir 9
Manchester 9
Montreal 9
Old Bridge 9
Poplar 9
Can Tho 8
Changsha 8
Frankfurt am Main 8
Madrid 8
Nuremberg 8
Santo André 8
Totale 12.202
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Nome #
Arboxeniolide-1, a New, Naturally Occurring Xeniolide Diterpenoid from the Gorgonian Paragorgia arborea of the Crozet Is. (S. Indian Ocean) 211
Agelastatin A, a New-Skeleton Cytotoxic Alkaloid of Oroidin Family. Isolation from the Axinellid Sponge Agelas dendromorpha of Coral Sea 200
A novel type of a second epoxy bridge in eunicellane diterpenes: isolation and 192
A Novel, Degraded Polyketidic Lactone, Leptosphaerolide, and Its Likely Diketone Precursor, Leptosphaerodione. Isolation from Cultures of the Marine Ascomycete Leptosphaeria oraemaris (LINDER) 191
(+)-Coralloidin-A and (-)-Coralloidin-B, Two New Sesquiterpenoids from the Mediterranean Alcyonacean Alcyonium coralloides 180
(+)-Raspailyne-A, a novel, acid-sensitive acetylenic enol ether glyceride from the marine sponge Raspailia pumila 173
Antimicrobial Activities from Marine Fungi 169
7-Bromocavernicolenone, a New a-Bromoenone from the Mediterranean Sponge Aplysina (=Verongia) cavernicola. Implied, Unprecedented Involvement of a Halogenated Dopa in the Biogenesis of a Natural Product 168
Hanishin, a semiracemic, bioactive C9 alkaloid of the axinellid sponge Acanthella carteri from the Hanish Islands. A shunt metabolite? 162
A Screening of Some Colonial Ascidiacea of Banyuls-sur-Mer for Antibacterial and Antifungal Activities and, Preliminarily, for Natural Products: 2'-Deoxyribonucleosides from Trididemnum cereum (Giard, 1872) 159
Bis-Allylic Reactivity of the Funicolides, 5,8(17)-Diunsaturated Briarane Diterpenes of the Sea Pen Funiculina quadrangularis from the Tuscan Archipelago, Leading to 16-Nortaxane Derivatives 158
Aztèquynol A, the first clearly defined, C-branched polyacetylene and the analogue Aztèquynol B. Isolation from the tropical marine sponge Petrosia sp 157
2'-Deoxynucleoside Uronic Acids from the Ascidian Aplidium (=Amarocium) fuscum (Drasche, 1883) 157
A Novel Glyceryl Ester (Glyceryl Dendryphiellate A), a Trinor-eremophilane (Dendryphiellin A1), and Eremophilanes (Dendryphiellin E1 and E2) from the Marine Deuteromycete Dendryphiella salina (SUTHERLAND) PUGH et NICOT 153
A New, Unexpected Marine Source of a Molting Hormone. Isolation of Ecdysterone in Large Amounts from the Zoanthid Gerardia savaglia 152
Almazole D, a new type of antibacterial 2,5-disubstituted oxazolic dipeptide from a red alga of the coast of Senegal 151
Glutathione S-transferase catalysed dehalogenation of haloaromatic compounds which lack nitro groups near the reaction centre 147
A synthesis of (S)-(+)-cryptone 146
Novel 10-Hydroxydocosapolyenoic Acids from Deep-Water Scleractinian Corals 145
A Butenolide Atypical of The Ranunculaceae: Aquilegiolide from Aquilegia atrata (Var. Atroviolacea) 144
Coralloidin C, D, and E: Novel Eudesmane Sesquiterpenoids from the Mediterranean Alcyonacean Alcyonium coralloides 138
Some Peculiar Cases of 7-Telesubstitution by Anionic Phosphorus Nucleophiles on 2-Halotropones 137
Leiopathic Acid, a Novel Optically Active Hydroxydocosapentaenoic Acid, and Related Compounds, from the Black Coral Leiopathes sp. of Saint Paul Island (S. Indian Ocean) 137
Twelve membered O-bridged, cyclic ethers of red seaweeds in the genus Laurencia exist in solution as slowly interconverting conformers 137
Sphinxolide, a 26-membered antitumoral macrolide isolated from an unidentified Pacific nudibranch 135
Bretonin A and isobretonin A, unique glycerol derivatives isolated from a demosponge of Brittany waters 133
Cavernicolin-1 and Cavernicolin-2, Two Epimeric Dibromolactams from The Mediterranean Sponge Aplysina (Verongia) cavernicola 131
Dictyotetraene, a New Diterpenoid from a Dictyota sp. (Chromophycota, Dictyotaceae) of the North Brittany Sea 129
Corallistin A, a Second Example of a Free Porphyrin from a Living Organism. Isolation from the Demosponge Corallistes sp. of the Coral See and Inhibition of Abnormal Cells 128
Antipodal pathways to secondary metabolites in the same eukaryotic organism 126
On the absolute configuration of penlanfuran and related sesquiterpenoids of the sponge Dysidea fragilis from the North-Brittany sea 125
From Epiraikovenal, an Instrumental Niche-Exploitation Sesquiterpenoid of Some Strains of the Marine Ciliated Protist Euplotes raikovi, to an Unusual Intramolecular tele Dienone-Olefin [2+2] Photocycloaddition 125
Synthesis of the Alleged Natural Monoterpenoid a-Santolinenone 123
New Furano-Sesquiterpenoids from Mediterranean Sponges 123
Coralloidolide F, the First Example of a 2,6-Cyclized Cembranolide: Isolation from the Mediterranean Alcyonacean Coral Alcyonium coralloides 122
On the First Marine Natural Product Having Low Enantiomeric Purity 121
Novel Cembranolides (Coralloidolide D and E) and a 3,7-Cyclized Cembranolide (Coralloidolide C) from the Mediterranean Coral Alcyonium coralloides 121
Novel Trinor-eremophilanes (Dendryphiellin B, C, and D), Eremophilanes (Dendryphiellin E, F, and G), and Branched C9-Carboxylic Acids (Dendryphiellic Acid A and B) from the Marine Deuteromycete Dendryphiella salina (Sutherland) Pugh et Nicot 120
Adriadysolide, the First Monoterpenoid Isolated from a Marine Sponge 120
Glycerol Enol Ethers of the Brachiopod Gryphus vitreus from the Tuscan Archipelago 120
Antibacterial and anticholinesterase activities of aplysamine-4, a bromotyrosine-derived metabolite of a Red Sea marine sponge 119
Isolation of ergosta-4,24(28)-dien-9-one from both Astrophorida demosponges and subantarctic hexactinellides 118
Rarisetenolide, epoxyrarisetenolide and epirarisetenolide, new skeleton sesquiterpene lactones as taxonomic markers and defensive agents of the marine ciliated morphospecies Euplotes rariseta 118
Slowly Interconverting Conformers of the Briarane Diterpenoids Verecynarmin-B, -C, and-D Isolated from the Nudibranch Mollusc Armina maculata and the Pennatulacean Octocoral Veretillum cynomorium of the East Pyrenean Waters 118
On the First Marine Stigmastane Sterols and Sterones Having a 24,25-Double Bond. Isolation from the Sponge Stelletta sp. of the Deep Coral Sea 117
Synthesis of the bretonins, polyolefinic esterified glyceryl ethers of an unidentified sponge from the north- Brittany sea:absolute configuration and novel structure assignment 115
Selective INEPT Experiments on XL-Series Spectrometers 114
Preliminary survey of toxicity of the green alga Caulerpa taxifolia introduced into the Mediterranean 114
Dendriphillin A, the First Fungal Trinor-Eremophilane. Isolation from the Marine Deuteromycete Dendryphiella salina (Sutherland) Pugh et Nicot 114
New Functionalized Cycloheptatrienes via Tropone s-Adducts 114
Isolation, in large Amounts, of the Rare Plant Ecdysteroid Ajugasterone-C from the Mediterranean Zoanthid Gerardia savaglia 113
AlmazoleC, a new indole alkaloid bearing an unusually 2,5-disubstituted oxazole moiety, and its putative biogenetic peptidic precursor , from a Senegalese delesseriacean seaweed 113
Isolation of Toxic and Potentially Toxic Sesqui- and Monoterpenes from the Tropical Green Seaweed Caulerpa taxifolia Which Has Invaded the Region of Cap Martin and Monaco 113
The Active Centres of Agelastatin A, a Strongly Cytotoxic Alkaloid of the Coral Sea Axinellid Sponge Agelas dendromorpha, as Determined by Comparative Bioassays with Semisynthetic Derivatives 113
Konakhin, a novel type of degraded sesterterpene. Isolation from a marine sponge of Senegal 112
Rogiolol-acetate : a new halogenated chamigrane from the sponge Spongia zimocca. An interesting case of dynamic process investigated by NMR lineshape analysis 112
Configuration, conformation and reactivity of highly functionalized eunicellane diterpenes isolated from the gorgonians Eunicella cavolinii and Eunicella singularis from Marseille 112
Almazole A and almazole B, unusual marine alkaloids isolated from an unidentified red seaweed from the coasts of Senegal 111
New 1,2,3,4,-tetrahydropyrrolo[1,2-a]pyridinium alkaloids (phloeodictynes) from the New Caledonian shallow-water haplosclerid sponge Oceanapia fistolosa. Structural elucidation from LC-tandem-MS-soft-ionization techniques and discovery of antiplasmodial activity 111
Hydroxyicosatetraenoic, Hydroxyicosapentaenoic, Hydroxydocosapentaenoic, and Hydroxydocosahexaenoic Acids from the Sponge Echinochalina mollis of the Coral Sea 110
A Photochemical Route to 4-Alkytropones including Nezukone 110
Stereochemical features of sesquiterpene metabolites as a distinctive trait of red seaweeds in the genus Laurencia 110
Caratteristiche strutturali e possibili applicazioni di complessi delle euplotine con beta-ciclodestrine 109
Conformational Preferences and Absolute Configuration of Agelastatin A, a Cytotoxic Alkaloid of the Axinellid Sponge Agelas dendromorpha from the Coral Sea, via Combined Molecular modelling, NMR and Exciton Splitting for Diamides and Hydroxyamide Derivati 109
Aplysinopsin-type alkaloids from Dendrophyllia sp., a scleractinian coral of the family Dendrophylliidae of the Philippines. Facile photochemical Z/E photoisomerization and thermal reversal 108
Oceanapins A-F, unique branched ceramides isolated from the Haplosclerid sponge Oceanapia cf. tenuis of the Coral Sea 107
Leucascandrolide A, a New Type of Macrolide: the First Powerfully Bioactive Metabolite of Calcareous Sponges (Leucascandra caveolata, a New Genus from the Coral Sea) 107
Caulerpenyne-Amine Reacting System as a Model for in vivo Interactions of Ecotoxicologically Relevant Sesquiterpenoids of the Mediterranean-Adapted Tropical Green Seaweed Caulerpa taxifolia 107
On the absolute configuration of penlanfuran and related sesquiterpenoids of the sponge Dysidea fragilis from the North-Brittany sea 107
Isolation of the Cembranoid Preverecynarmin Alongside Some Briaranes, the Verecynarmins, from Both the Nudibranch Mollusc Armina maculata and the Octocoral Veretillum cynomorium of the East Pyrenean Mediterranean Sea 106
Isolation from the Medterranean Stoloniferan Coral Sarcodictyon roseum of Sarcodictyn C, D, E, and F, Novel Diterpenoidic Alcohols Esterified by (E)-or(Z)-N(1)-Methylurocanic Acid. Failure of the Carbon-Skeleton Type as a Classification Criterion 105
Gerardiasterone, a New Ecdysteroid with a 20,22,23,25-Tetrahydroxylated Side Chain from the Mediterranean Zoanthid Gerardia savaglia 104
C15 Acetogenins and terpenes of the dictyoceratid sponge Spongia zimocca of il Rogiolo: a case of seaweed-metabolite transfer to, and elaboration within a sponge? 103
On the Funicolides, Briaranes of the Pennatulacean Coral Funicolina quadrangularis from the Tuscan Archipelago: Conformational Preferences in this Class Diterpenes 103
Metabolites with a Novel C30 backbone from marine ciliates 103
Cytotoxins, Mycotoxins and Drugs from a New Deuteromycete, Acremonium neo-caledoniae, from the Southwestern Lagoon of New Caledonia 103
New 1,2,3,4-tetrahydropyrrolo[1,2-a]pyrimidinium alkaloids(phloeodictynes) from the New Caledonian shallow-waterhaplosclerid sponge Oceanapia fistulosa. Structural elucidationfrom mainly LC-tandem-MS-soft-ionization techniques anddiscovery of antiplasmodial activity 102
Pteridines, Sterols, and Indole Derivatives from the Lithistid Sponge Corallistes undulatus of the Coral Sea 100
Nuovi terpenoidi da ciliati marini del genere Euplotes : Chimica e Biologia a confronto 99
Analisi conformazionale di nuovi prodotti naturali marini mediante studio di NMR dinamico e calcoli di Meccanica Molecolare 99
New Types of Potentially Antimalarian Agents: Epidioxy-Substituted Norditerpene and Norsesterpenes from the Marine Sponge Diacarnus levii 98
Peculiarità strutturali e probabile biogenesi di nuovi diterpeni da una alga rossa Laurencia microcladia 97
Conformational Studies, from temperature-dependent NMR specta, of marine polyalogenated chamigranes 96
Sintesi diastereoselettiva e biogeneticamente guidata della volvatellin 96
Verecynamin A, a Novel Briarane Diterpenoid Isolated from Both the Mediterranean Nudibranch Mollusc Armina maculata and its Prey, the Pennatulacean Octocoral Veretillum cynomorium 95
Molecular characterization of a highly heterogeneous mixture of glucosylceramides from a deep-water Mediterranean scleractinian Dendrophyllia cornigera 95
Coralloidolide A and Coralloidolide B, the First Cembranoids from Mediterranean Organisms, the Alcyonacean Alcyonium coralloides 94
First finding of scytonemin in red algae: phylogenetic and ecological implications 94
On the unusual propensity by the red seaweed Laurencia microcladia of Il Rogiolo to form C15 oxepanes: isolation of rogioloxepane A,B, C and their likely biogenetic acyclic precursor, prerogioloxepane 94
Nuovi macrolidi da un nudibranco dell'Oceano Pacifico 94
Epinardins A-C, New Pyrroloiminoquinone Alkaloids of Undetermined Deep-Water Green Demosponges from Pre-Antarctic Indian Ocean 94
Sesquiterpenoids of the Sponge Dysidea fragilis of the North-Bryttany Sea 94
Sarcodictyn A and Sarcodictyn B, Novel Diterpenoidic Alcohols Esterified by (E)-N(1)-Methylurocanic Acid. Isolation from the Mediterranean Stolonifer Sarcodictyon roseum 93
Novel aplysinopsin-type compounds from scleractinian corals of the family Dendrophyllidae of the Mediterraneanand the Philippines. Configurational-assignment criteria, stereospecific synthesis, and photoisomerization 92
High Solvolytic Reactivity And Conformational Bias in New Obtusallenes,A Rare Family of C15 Macrocyclic Ethers 91
On the Stereochemisty of Grignard Addition to Bicyclo[3.3.1]nonan-2-one. Preferential Axial Attack on a Cyclohexanone System by a Bulky Nucleophile 91
Penlanfuran, a new furanoid sesquiterpene from the marine sponge Dysidea fragilis (Mont.) of Brittany. A striking difference with the same Hawaiian species. 91
Suberein, a novel dimeric styryl sulfate from the verongid sponge Suberea creba from New Caledonia 90
Quinolones from a bacterium and tyrosine metabolites from its host sponge, Suberea creba from the Coral Sea 90
Conformational analysis of marine polyhalogenated beta-chamigranes through temperature-dependent NMR spectra 90
Totale 12.117
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Categoria #
all - tutte 72.301
article - articoli 0
book - libri 0
conference - conferenze 0
curatela - curatele 0
other - altro 0
patent - brevetti 678
selected - selezionate 0
volume - volumi 0
Totale 72.979
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Totale Lug Ago Sett Ott Nov Dic Gen Feb Mar Apr Mag Giu
2021/20221.198 0 0 3 102 57 28 72 384 49 115 93 295
2022/20231.865 299 122 3 236 339 302 0 127 264 24 111 38
2023/2024625 60 75 28 15 55 140 27 80 11 12 12 110
2024/20252.487 11 16 136 547 209 353 24 135 166 351 170 369
2025/20265.136 222 103 847 895 462 419 1.101 89 431 349 138 80
2026/2027486 90 382 14 0 0 0 0 0 0 0 0 0
Totale 17.316