IRIS
Pietra, Francesco
 Distribuzione geografica
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Continente #
NA - Nord America 12.099
AS - Asia 3.685
EU - Europa 2.813
SA - Sud America 665
AF - Africa 71
Continente sconosciuto - Info sul continente non disponibili 50
OC - Oceania 14
Totale 19.397
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Nazione #
US - Stati Uniti d'America 11.882
SG - Singapore 1.665
CN - Cina 809
VN - Vietnam 678
UA - Ucraina 583
BR - Brasile 537
RU - Federazione Russa 395
SE - Svezia 362
FI - Finlandia 305
IT - Italia 213
FR - Francia 205
GB - Regno Unito 175
LV - Lettonia 170
DE - Germania 140
BG - Bulgaria 125
CA - Canada 119
KR - Corea 109
IN - India 92
AR - Argentina 50
BD - Bangladesh 42
HK - Hong Kong 39
MX - Messico 39
IQ - Iraq 35
JP - Giappone 28
PL - Polonia 27
ES - Italia 25
JO - Giordania 25
PK - Pakistan 25
NL - Olanda 23
EC - Ecuador 21
IL - Israele 21
ID - Indonesia 19
ZA - Sudafrica 18
CO - Colombia 17
TR - Turchia 16
CR - Costa Rica 14
PH - Filippine 12
JM - Giamaica 11
CL - Cile 10
TH - Thailandia 10
AU - Australia 9
EG - Egitto 9
VE - Venezuela 9
MY - Malesia 8
PE - Perù 8
TT - Trinidad e Tobago 8
BY - Bielorussia 7
HR - Croazia 7
KE - Kenya 7
SA - Arabia Saudita 7
AZ - Azerbaigian 6
PT - Portogallo 6
AE - Emirati Arabi Uniti 5
CI - Costa d'Avorio 5
LT - Lituania 5
MA - Marocco 5
OM - Oman 5
PY - Paraguay 5
RO - Romania 5
SC - Seychelles 5
AL - Albania 4
CH - Svizzera 4
DO - Repubblica Dominicana 4
EE - Estonia 4
ET - Etiopia 4
HN - Honduras 4
IE - Irlanda 4
NI - Nicaragua 4
NZ - Nuova Zelanda 4
TW - Taiwan 4
UY - Uruguay 4
UZ - Uzbekistan 4
ZW - Zimbabwe 4
DZ - Algeria 3
GA - Gabon 3
GR - Grecia 3
KG - Kirghizistan 3
LB - Libano 3
PR - Porto Rico 3
SK - Slovacchia (Repubblica Slovacca) 3
SV - El Salvador 3
TN - Tunisia 3
AO - Angola 2
BB - Barbados 2
BH - Bahrain 2
CZ - Repubblica Ceca 2
GP - Guadalupe 2
GY - Guiana 2
HU - Ungheria 2
KZ - Kazakistan 2
MD - Moldavia 2
NP - Nepal 2
PS - Palestinian Territory 2
QA - Qatar 2
SY - Repubblica araba siriana 2
AT - Austria 1
AW - Aruba 1
BE - Belgio 1
BN - Brunei Darussalam 1
BO - Bolivia 1
Totale 19.332
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Città #
Jacksonville 1.269
Singapore 1.100
Ashburn 1.013
Chandler 884
Fairfield 799
San Jose 632
Columbus 434
Council Bluffs 412
Woodbridge 407
Dallas 400
Santa Clara 357
Seattle 330
Wilmington 329
Princeton 307
San Mateo 280
Houston 276
Cambridge 253
Ann Arbor 222
Moscow 204
Ho Chi Minh City 194
New York 182
Hanoi 175
Riga 170
Lauterbourg 147
Beijing 139
Boardman 128
Sofia 122
Dearborn 120
Los Angeles 120
Helsinki 116
Seoul 104
The Dalles 88
Hefei 84
Buffalo 75
São Paulo 75
Phoenix 72
Da Nang 50
Munich 42
San Diego 42
Toronto 41
Milan 38
London 36
Chicago 33
Lawrence 32
Redondo Beach 30
Orem 28
North Bergen 27
Düsseldorf 26
Haiphong 26
Norwalk 26
Bremen 24
Hong Kong 24
Guangzhou 22
Brooklyn 21
Warsaw 21
Chennai 20
Turku 20
Falls Church 19
Fremont 19
San Francisco 18
Tokyo 18
Andover 17
Johannesburg 17
Rio de Janeiro 17
Denver 16
Nanjing 16
Des Moines 15
Montreal 15
Shanghai 15
Washington 15
Atlanta 14
Boston 14
Brasília 14
Kunming 14
Rome 14
Verona 14
Hải Dương 13
Paris 13
Trento 13
Charlotte 12
Jinan 12
Stockholm 12
Agrolândia 11
Baghdad 11
Belo Horizonte 11
Biên Hòa 11
Bến Tre 11
Philadelphia 11
Porto Alegre 11
San Paolo di Civitate 11
Lahore 10
Manchester 10
Nha Trang 10
Thái Nguyên 10
Buenos Aires 9
Campinas 9
Frankfurt am Main 9
Guayaquil 9
Izmir 9
Kingston 9
Totale 13.206
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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) 230
Agelastatin A, a New-Skeleton Cytotoxic Alkaloid of Oroidin Family. Isolation from the Axinellid Sponge Agelas dendromorpha of Coral Sea 212
A novel type of a second epoxy bridge in eunicellane diterpenes: isolation and 210
A Novel, Degraded Polyketidic Lactone, Leptosphaerolide, and Its Likely Diketone Precursor, Leptosphaerodione. Isolation from Cultures of the Marine Ascomycete Leptosphaeria oraemaris (LINDER) 205
(+)-Coralloidin-A and (-)-Coralloidin-B, Two New Sesquiterpenoids from the Mediterranean Alcyonacean Alcyonium coralloides 191
(+)-Raspailyne-A, a novel, acid-sensitive acetylenic enol ether glyceride from the marine sponge Raspailia pumila 188
Antimicrobial Activities from Marine Fungi 186
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 183
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 176
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 170
Hanishin, a semiracemic, bioactive C9 alkaloid of the axinellid sponge Acanthella carteri from the Hanish Islands. A shunt metabolite? 170
2'-Deoxynucleoside Uronic Acids from the Ascidian Aplidium (=Amarocium) fuscum (Drasche, 1883) 170
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) 169
A synthesis of (S)-(+)-cryptone 168
Almazole D, a new type of antibacterial 2,5-disubstituted oxazolic dipeptide from a red alga of the coast of Senegal 164
Aztèquynol A, the first clearly defined, C-branched polyacetylene and the analogue Aztèquynol B. Isolation from the tropical marine sponge Petrosia sp 164
A New, Unexpected Marine Source of a Molting Hormone. Isolation of Ecdysterone in Large Amounts from the Zoanthid Gerardia savaglia 158
Coralloidin C, D, and E: Novel Eudesmane Sesquiterpenoids from the Mediterranean Alcyonacean Alcyonium coralloides 156
Glutathione S-transferase catalysed dehalogenation of haloaromatic compounds which lack nitro groups near the reaction centre 155
A Butenolide Atypical of The Ranunculaceae: Aquilegiolide from Aquilegia atrata (Var. Atroviolacea) 154
Novel 10-Hydroxydocosapolyenoic Acids from Deep-Water Scleractinian Corals 153
Twelve membered O-bridged, cyclic ethers of red seaweeds in the genus Laurencia exist in solution as slowly interconverting conformers 149
Cavernicolin-1 and Cavernicolin-2, Two Epimeric Dibromolactams from The Mediterranean Sponge Aplysina (Verongia) cavernicola 148
Leiopathic Acid, a Novel Optically Active Hydroxydocosapentaenoic Acid, and Related Compounds, from the Black Coral Leiopathes sp. of Saint Paul Island (S. Indian Ocean) 147
Bretonin A and isobretonin A, unique glycerol derivatives isolated from a demosponge of Brittany waters 146
Sphinxolide, a 26-membered antitumoral macrolide isolated from an unidentified Pacific nudibranch 146
Some Peculiar Cases of 7-Telesubstitution by Anionic Phosphorus Nucleophiles on 2-Halotropones 145
Dictyotetraene, a New Diterpenoid from a Dictyota sp. (Chromophycota, Dictyotaceae) of the North Brittany Sea 145
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 142
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 141
Rarisetenolide, epoxyrarisetenolide and epirarisetenolide, new skeleton sesquiterpene lactones as taxonomic markers and defensive agents of the marine ciliated morphospecies Euplotes rariseta 139
Coralloidolide F, the First Example of a 2,6-Cyclized Cembranolide: Isolation from the Mediterranean Alcyonacean Coral Alcyonium coralloides 137
Adriadysolide, the First Monoterpenoid Isolated from a Marine Sponge 137
Antibacterial and anticholinesterase activities of aplysamine-4, a bromotyrosine-derived metabolite of a Red Sea marine sponge 137
Novel Cembranolides (Coralloidolide D and E) and a 3,7-Cyclized Cembranolide (Coralloidolide C) from the Mediterranean Coral Alcyonium coralloides 137
Synthesis of the Alleged Natural Monoterpenoid a-Santolinenone 136
On the absolute configuration of penlanfuran and related sesquiterpenoids of the sponge Dysidea fragilis from the North-Brittany sea 134
Antipodal pathways to secondary metabolites in the same eukaryotic organism 133
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 132
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 132
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 132
Isolation of ergosta-4,24(28)-dien-9-one from both Astrophorida demosponges and subantarctic hexactinellides 130
On the First Marine Natural Product Having Low Enantiomeric Purity 130
New Furano-Sesquiterpenoids from Mediterranean Sponges 129
Synthesis of the bretonins, polyolefinic esterified glyceryl ethers of an unidentified sponge from the north- Brittany sea:absolute configuration and novel structure assignment 128
Glycerol Enol Ethers of the Brachiopod Gryphus vitreus from the Tuscan Archipelago 128
New Functionalized Cycloheptatrienes via Tropone s-Adducts 127
Leucascandrolide A, a New Type of Macrolide: the First Powerfully Bioactive Metabolite of Calcareous Sponges (Leucascandra caveolata, a New Genus from the Coral Sea) 127
Preliminary survey of toxicity of the green alga Caulerpa taxifolia introduced into the Mediterranean 126
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 126
Selective INEPT Experiments on XL-Series Spectrometers 125
AlmazoleC, a new indole alkaloid bearing an unusually 2,5-disubstituted oxazole moiety, and its putative biogenetic peptidic precursor , from a Senegalese delesseriacean seaweed 125
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 125
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 125
Konakhin, a novel type of degraded sesterterpene. Isolation from a marine sponge of Senegal 124
Dendriphillin A, the First Fungal Trinor-Eremophilane. Isolation from the Marine Deuteromycete Dendryphiella salina (Sutherland) Pugh et Nicot 124
A Photochemical Route to 4-Alkytropones including Nezukone 123
Caulerpenyne-Amine Reacting System as a Model for in vivo Interactions of Ecotoxicologically Relevant Sesquiterpenoids of the Mediterranean-Adapted Tropical Green Seaweed Caulerpa taxifolia 123
Aplysinopsin-type alkaloids from Dendrophyllia sp., a scleractinian coral of the family Dendrophylliidae of the Philippines. Facile photochemical Z/E photoisomerization and thermal reversal 122
Hydroxyicosatetraenoic, Hydroxyicosapentaenoic, Hydroxydocosapentaenoic, and Hydroxydocosahexaenoic Acids from the Sponge Echinochalina mollis of the Coral Sea 122
Rogiolol-acetate : a new halogenated chamigrane from the sponge Spongia zimocca. An interesting case of dynamic process investigated by NMR lineshape analysis 122
Caratteristiche strutturali e possibili applicazioni di complessi delle euplotine con beta-ciclodestrine 122
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 122
Almazole A and almazole B, unusual marine alkaloids isolated from an unidentified red seaweed from the coasts of Senegal 122
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 121
Configuration, conformation and reactivity of highly functionalized eunicellane diterpenes isolated from the gorgonians Eunicella cavolinii and Eunicella singularis from Marseille 121
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 120
Stereochemical features of sesquiterpene metabolites as a distinctive trait of red seaweeds in the genus Laurencia 119
On the absolute configuration of penlanfuran and related sesquiterpenoids of the sponge Dysidea fragilis from the North-Brittany sea 119
Isolation, in large Amounts, of the Rare Plant Ecdysteroid Ajugasterone-C from the Mediterranean Zoanthid Gerardia savaglia 118
Oceanapins A-F, unique branched ceramides isolated from the Haplosclerid sponge Oceanapia cf. tenuis of the Coral Sea 118
On the Funicolides, Briaranes of the Pennatulacean Coral Funicolina quadrangularis from the Tuscan Archipelago: Conformational Preferences in this Class Diterpenes 116
Metabolites with a Novel C30 backbone from marine ciliates 116
Cytotoxins, Mycotoxins and Drugs from a New Deuteromycete, Acremonium neo-caledoniae, from the Southwestern Lagoon of New Caledonia 115
Sarcodictyn A and Sarcodictyn B, Novel Diterpenoidic Alcohols Esterified by (E)-N(1)-Methylurocanic Acid. Isolation from the Mediterranean Stolonifer Sarcodictyon roseum 112
Epinardins A-C, New Pyrroloiminoquinone Alkaloids of Undetermined Deep-Water Green Demosponges from Pre-Antarctic Indian Ocean 112
New Types of Potentially Antimalarian Agents: Epidioxy-Substituted Norditerpene and Norsesterpenes from the Marine Sponge Diacarnus levii 111
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? 109
Gerardiasterone, a New Ecdysteroid with a 20,22,23,25-Tetrahydroxylated Side Chain from the Mediterranean Zoanthid Gerardia savaglia 109
Sesquiterpenoids of the Sponge Dysidea fragilis of the North-Bryttany Sea 109
Verecynamin A, a Novel Briarane Diterpenoid Isolated from Both the Mediterranean Nudibranch Mollusc Armina maculata and its Prey, the Pennatulacean Octocoral Veretillum cynomorium 108
Molecular characterization of a highly heterogeneous mixture of glucosylceramides from a deep-water Mediterranean scleractinian Dendrophyllia cornigera 108
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 108
Analisi conformazionale di nuovi prodotti naturali marini mediante studio di NMR dinamico e calcoli di Meccanica Molecolare 108
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 107
Conformational Studies, from temperature-dependent NMR specta, of marine polyalogenated chamigranes 106
Reaction of Tropone with 2-Mercaptoethanol: 1,2-Difunctionalization of Cycloheptatrienenes with Oxygen and Sulphur in a Fused Ring 106
Nuovi terpenoidi da ciliati marini del genere Euplotes : Chimica e Biologia a confronto 106
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 106
Penlanfuran, a new furanoid sesquiterpene from the marine sponge Dysidea fragilis (Mont.) of Brittany. A striking difference with the same Hawaiian species. 106
Novel aplysinopsin-type compounds from scleractinian corals of the family Dendrophyllidae of the Mediterraneanand the Philippines. Configurational-assignment criteria, stereospecific synthesis, and photoisomerization 105
Pteridines, Sterols, and Indole Derivatives from the Lithistid Sponge Corallistes undulatus of the Coral Sea 105
Coralloidolide A and Coralloidolide B, the First Cembranoids from Mediterranean Organisms, the Alcyonacean Alcyonium coralloides 104
Peculiarità strutturali e probabile biogenesi di nuovi diterpeni da una alga rossa Laurencia microcladia 103
Sintesi diastereoselettiva e biogeneticamente guidata della volvatellin 103
First finding of scytonemin in red algae: phylogenetic and ecological implications 102
Quinolones from a bacterium and tyrosine metabolites from its host sponge, Suberea creba from the Coral Sea 102
Hemithio-Analogues of Meisenheimer Complexes and Sulphide Group Activation of Aromatic Substitutiton by Alkoxides 101
Nuovi macrolidi da un nudibranco dell'Oceano Pacifico 101
Calenzanol, the first member of a new class of sesquiterpene with a novel skeleton from the red seaweed Laurencia microcladia from the Bay of Calenzana, Elba Island 100
Totale 13.344
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Categoria #
all - tutte 78.429
article - articoli 0
book - libri 0
conference - conferenze 0
curatela - curatele 0
other - altro 0
patent - brevetti 746
selected - selezionate 0
volume - volumi 0
Totale 79.175
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Totale Lug Ago Sett Ott Nov Dic Gen Feb Mar Apr Mag Giu
2021/20221.093 0 0 0 0 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
2026/20272.567 90 382 927 1.068 100 0 0 0 0 0 0 0
Totale 19.397