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Table of Contents1,4(2H,5H)-dioxoimidazo[1,5,4-h,i]indazoline : a new heterocyclic ring system Photolysis of amino-substitutd 1,4-naphthoquinones Rections of 1-methylthiabenzene 1-oxides and 1-methyl-2-azathiabenzene 1-oxides with acetylenedicarboxylate Studies with Reissert compounds part Ⅵ : change of pathway occasioned by phase transfer catalysis : suppression of N-acyl pseudo-base formation in favour of a Reissert reaction Chemistry of 8-azasteroids Ⅰ : a new route to 8-azagonan derivatives A new synthesis of benzo[a]quinolizines related to ipecac alkaloids Molecular structure of 3b-acetoxyatractylon Structure of casedine A facile synthesis of substituted pyrimidines by ring transformation of 1,3-oxazin-4-ones Ketonic character of alkyl 3-hydroxypyrrole-2-carboxylates : the first entry into 2,3-unsubstituted 4-oxo-2-pyrrolines 4-oxo-2-pyrrolines carrying no substituents on the ring carbon : substituent effects in the tautomerism between 4-oxo-2-pyrrolines and 3-hydroxypyrroles Cyclodextrin-nitrophenol systems studied by polarography The rections and syntheses with organometallic compounds Ⅷ : the total synthesis of sendaverine by use of the palladium catalyzed insertion of carbon monoxide Oxidative cyclization of morusin with manganese dioxide Application of enamine photocyclization to a total synthesis of (±)-cryptaustoline A convenient photoosynthsis of aziridino-pyrrolo[1,2-a]benz[f]indoloquinones as model mitomycins in a one-pot reaction Preparation of 3,4,5-trisubstituted pyrazoles from 2,2-dioxoketene-S,S-acetals A new synthesis of 3,4-diaminothiophenes A novel ring contraction of 4-bromo-2,3-dihydrobenzo[b]thiepin-5(4H)-one Proton magnetic resonance spectra of some alkylpyridine and alkylpyrazine N-oxides Derivatives of morphine Ⅶ : constitution of a presumed isomer of 5-benzyldihydrocodeinone The partial synthesis of structural analogs of tubulosine Synthesis of xanthines by the reaction of 6-amino-5-arylazouracils or 5-arylazobarbituric acids with alkylamines Reissert compounds studies ⅩⅩⅨ : an improved synthesis of the phthalazine reissert compound by phase transfer catalysis A new synthesis of 6-hydroxypteridine derivatives Preparation of 6-anilino-5-diazouracils and their conversion into indolo[2,3-d]pyrimidines A novel synthesis of v-triazolo[4,5-d]pyrimidines New syntheses of purines and oxazolo[5,4-b]pyrimidines Synthesis of 3-arylfervenulins An abnormal formation of oxazolo[5,4-d]pyrimidines from 6-(benzylidine-1'-methylhydrazino)-1,3-dimethyluracils Pyrroloquinolines Ⅱ : 1H-pyrrolo[3,2-b]quinolines
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Table of ContentsPhotochemical synthesis of 2-phenylpyrroles by the cyclization of β-aminovinyl ketones New thiapyridinophanes The structure of alkylation products of 2-substituted 3-methylbenzolines with meerwein reagents Picrohelein, a new cytotoxic and bitter pseudoguaianolide from Sendai Helenium autumnale L Oxidative cyclization of 6-(N-alkylanilino)-5-aminouracils to flavins with diethyl azodicarboxylate or nitrosobenzene Syntheses of thieno[2,3-c]-, pyrrolo[2,3-c]- and indolo[2,3-c]diazanaphthalenes by photocyclization of acylaminopyridines Reaction of benzofuran with indine azide : formation of cis- and trans-2,3-diazido-2,3-dihydrobenzofurans A facile formation of benzo[a]quinolizin-4-ones A versatile synthesis of reissert compounds Reissert compound studiesⅩⅩⅧ : a novel cyanohydrin formation Chemistry of the 6,8-dioxabicyclo[3.2.1]octane series sources, synthesis, structures and reactions
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Table of ContentsProfile and scientific contributions of Doctor Ken'ichi Takeda Novel base-modified nucleosides Propellanes ⅩⅩⅩⅤ : attempted preparation of a [5]prismane derivative from Diels-Alder adducts of tetraenic propellanes The reaction of ω-vinyl primary disulfide with halogen Photolysis of alkenyl disulfide Peshawarine, an unusual isoquinoline alkaloid A total synthesis of (±)-fendleridine Photosensitized oxygenations of tryptophan derivatives : evidence for involvement of singlet oxygen Studies on the synthesis of bisindole alkaloids V : the hydrazine method Totoal synthesis of 11-epicorynoline Photo-oxidation of 1-methyl-3-oxido-5-phenylpyridinium Synthesis of tetrahydro-5H-dibenz[b,d]azepin-6(7H)-one Constituents of higher fungi : part Ⅷ (1) : isolactarorufin, a novel tetracyclic sesquiterpene lactone from lactarius rufus Preferential removal of a methylenedioxy group from optically active isoquinolines A simple route to indolizine-2-carboxylates : cycloaddition reactions of pyridinium arylsulphonylmethylides Ring expansion of 3-substituted 1,2-benzoisothiazole 1,1-dioxides to 1,2-benzothiazepine 1,1-dioxides Novel synthesis of N-Alkylated lactams Stereochemical and hydrogenolysis studies with substituted isoxazolidines The condensation of histamine with carbonyl compounds The isomerization of hydrogenated adducts obtained from 1,4-phthalazinedione 1,3-dipolar cycloadditions of carbonyl ylides to thiocarbonyl and carbonyl compounds The reactions of carbonyl ylides with azodicarboxylic esters Oxidative transformation of dihydrocoralyne to 6’-acetylpapaveraldine A new modification of bischler-napieralski reaction for β-arylethylisocynates and β-arylethylurethans Synthesis of alkaloid, zephyranthine Synthesis of 1-hydroxy-4,6-dimethoxy-8-methylxanthone A novel reaction for synthesis of nitrogen heterocyclic compounds Phenol oxidation of isoquinoline alkaloids with cuprous chloride and oxygen in pyridine as an enzymatic model : biomimetic total synthesis of corytuberine, isoboldine, pallidine, orientalinone and kreysiginone Synthesis and structure assignments of diethyl cis- and trans-5-ethyl-2-oxo-4-piperidinemalonate The reaction of thiobenzoyl isocyanates with N,N'-diphenylsulfur diimide ¹H NMR solvet sifts induced by hexafluorobenzene in lactones, lactams, acid anhydrides and imides N-monomethylation of aromatic primary amines Formation of a p-quinone methide in the presence of methanol Acid-catalyzed reaction of 1-substituted 10-acetoxy-8-chloro-6-methoxy-2-methyl-7-oxo-Δ5,6,8,9-hexahydroisoquinolines Formation and stereochemistry of 2-aryl-2-ethyl-1,2,3,5,6,11b-hexahydro-11H-indolo[3,2-g]indolizine previously taken for to be 3,4-dehydroquebrachamine Diterpenic lactones of mallotus repandus Rections and synthetic applications of β-ketosulfoxides Ⅶ : a novel synthesis of pyranocarbazole alkaloids, girinimbine and murrayacine Studies on potential antitumor agents Ⅰ : thiosemicarbazones of ρ-chlorophenyl- and μ-chlorophenylpyridine-2-carboxaldehydes Nucleosides and nucleotides part 9 : syntehsis of dinucleoside monophosphates containing 2’-deoxycytidine and 1-(2’-deoxy-β-D-ribofuranosyl)-2(1H)-pyridone 1,3-dipolar cycloaddition of 4-alkoxy-6-methylpyrimidine N-oxides Stereochemistry of nonoxidative photocyclization of indole-2-carboxanilides to an indolo[2,3-c]quinoline system Introduction of substituents to C₃ of yohimbinoid skeleton Iwamide : a new phenolic amide derived from a quaternary benzo[c]phenanthridine alkaloids Conversion of caprolactam to eight-membered ene-lactam Product distribution in the ribosylation reactions of adenine and 1-deazapurine in the presence of stannic chloride Synthesis of 3-hydroxy cephems Synthesis and circular dichroism of some trans-5,5a,6,7,8,9,9a,10-octahydrobenzo[g]quinoxalines (octahydrobenzo[g]quinoxalines) Synthesis of 9-azaprostaglandin analogs A novel oxidation of qunaldine N-oxide Hydroxyalkylation of N-alkoxyquinaldinium and -lepidinium perchlorates β-lactones as reagents in protein chemsitry : the inactivation of pepsin with β-propiolactone Biosynthetic studies with ¹³C : a novel favorsky rearrangement route to the fungal metabolite aspyrone Sciadoline, a new type of bisbenzylisoquinoline alkaloid 2-methoxydihydrohelenalin from the rhizoma of Sendai Helenium autumnale L Reactions of halothiophenes with acetone enolate and amide ions Novel pyridazinium ion synthesis : reaction of diaminocyclopropenium ion with diazoalkanes The reaction of oxazoles with singlet oxygen Ⅳ : imino anhydride intermediates Reactions of stable ylidic 1-thianaphthalene with electrrophiles : a new ring expansion reaction Synthesis of 3-substituted cephems from penicillins via 4-dithio-2-azetidinone intermediates Interne photocyclisierungen von bi-1,2-dihydroisochinolinen und eines methylen-bis-naphthalinones Studies directed toward the total synthesis of perhydrohistrionicotoxin 8-α-amido-5-azanonam-1,3-dienes potential β-lactam antibiotics Lipophilic cryptates : salt solubilization and anion activation The structure of harrisonin Steroids having sulfur-substituent groups Biosynthetic studies with ¹³C labeled precursors Total synthesis of 2,4-dioxyquinoline alkaloids Electrocyclic reactions of some penta-1,4-diene systems The present status of malaria chemotherapy Racemisation and epimerisation in isoquinoline and indole alkaloids beta-Lactams as synthons : synthesis of heterocycles via beta-Lactam cleavage The use of isolated enzymes in heterocyclic chemsitry New syntheses of prostaglandis Mass spectroscopic fragmentation reactions Ⅷ : the behavior of sterically highly hindered porphyrins : mass spectra of sterically hindered porphyrins The diterpenoid alkaloids of delphinium staphisagria Diterpenoids of isodon and teucrium plants Examples of the use of fluorescent : heterocycles in chemistry and biology Organoborane heterocycles via cyclic hydroboration of dienes Reduction of heterocyclic compounds by metal-ammonia solutions and related reagents
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Table of ContentsThe final product of photocyclization of 3,4-bisarylmethylenedihydro-2(3H)-furanone Simple synthesis of quinazolone alkaloids arborine and rutecarpine through iminoketene Syntheses of 2-pyrone derivatives A new synthesis of benzo[c]phenanthridine derivative A transformation of 7-azapteridines into 6-azapurines (imidazo[4,5-e] -as-triazines) The chemistry of 1,2-diazepines
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Table of ContentsA new alkylation of pyridazines with nitromethane and nitroethane The reaction of 6-methyl-7-azido-5,8-quinolinediones with cyclic secondary amines : a convenient synthesis of 6-substituted aminomethyl-7 -amino-5,8 -qijinolinediones Synthesis of the 6-aza analog of Trimethoprim A novel displacement reaction of 1-ethyl-6,7-methylenedioxyquinolines with nucleophiles Diels-alder reaction in a polar system : thermal cycloaddition of 1-phenyl-2-ethoxycarbonyl-3-benzoyl-Δ²-pyrroline-4,5-dione with butadienes Cycloaddition of 2-phenyl-3-ethoxycarbonyl-Δ²-pyrroline-4,5-dione with butadiene : evidence of [1,3]sigmatropy for formation of the diels-alder product Crystal structure of the photocycloadduct of 1-[4'-bromophenyl]-2-phenyl-3-ethoxycarbonyl-Δ²-pyrroline-4 ,5-dione with butadiene Photocyclization of N-chloroacetyl-2-methoxy- and 2,4-dimethoxy-phenethylamines to 4-azabicycl0[5.3.1]undeca-9-ene-3,8-diones Studies on the synthesis of bislndole alkaloids Ⅵ : novel lactam derivatives in the vinblastine series The reaction of β-aminoenones with N-substituted ureas The photochemistry of aromatic N-oxides : a crystal review
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Table of ContentsStevens rearrangement of berbine methiodides by sodium bis-(2-methoxyethoxy)aluminium hydride Photochemical cycloaddition of 2-phenyl-3-ethoxycarbonyl-Δ²-pyrroline-4,5-dione with olefins Crystal structure of the photocycloaddition of 1-(4’-bromophenyl)-2-phenyl-3-ethoxycarbonyl-Δ²-pyrroline-4,5-dione with styrene Thermal reaction of 1-phenyl-2-ethoxycarbonyl-3-benzoyl-Δ²-pyrroline-4,5-dione with olefins Reactions of N₄S₄ with benzil mono- and bishydrazone ¹³C-NMR of 1,3-disubstituted 1,2,3,4-tetrahydro-β-carbolines The mechanism in the colorimetry of caffeine and theobromine by hypochlorous acid-pyridine method The structure and the synthesis of sevanine Studies on the synthesis of bisindole alkaloids Ⅳ : novel oxygenated catharanthine derivatives Photosensitized oxygenation of 2,3-dophenylindole derivatives Azafulvenes 4 : cycloaddition reaction of 6-amino-1-azafulvene to isocyanate, ketene and sulfene
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Table of ContentsSynthesis of a cyrokinin metabolite Structure of a new bisbenzylisoquinoline alkaloid, lindoldhamine Photolysis of some quinoxaline-1,4-dioxides : a method of structural assignment Synthesis of yenhusomine and yenhusomidine The synthesis of japonine Intra- and inter-molecular photoreactions of N-chloroacetyl derivatives of dimethylaminophenethylamines and dimethylaminobenzylamines in both acidic and basic solutions Pictet-spengler condensations in refluxing benzene Selenium analogs of naturally occurring products Ⅱ The optical resolution of (±)-galanthamine Utility of heterocyclic diazo compounds in organic synthesis
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Table of ContentsA new alkylating method at the 4-position of isoquinoline derivatives Alternative synthesis of protoberberine alkaloid (±)-xylopinine A study of the reaction between 1-halogenobenzyl-2-benzazepines and dimsylsodium Reaction of isoquinolinium ylide with ketenethioacetals Hydrazinolysis of some azolopyrazines A novel synthesis of the phenanthroindolizidine alkaloid ring system from phenanthrene Synthesis of 4-hydroxy-3-mercaptobenzoic acid and 2,3-dihydro-5,6-tetramethylene-1,4-dithiine from dithiolane derivatives Azafulvenes 3 : cycloaddition reaction of 6-amino-1-azafulvene to electron-deficient olefin and acetylene Derivatives of 1,2-dithiole-3-thiones ⅩⅡ : the reactions of 1,2-dithiole-3-thione with bis-arylsulfonyldiazomethane Synthesis and reduction of 2H-cyclohepta[c]pyrrol-6-ones Synthesis of the clavine skeletons by photocyclisation of N-methacrylnaphthalides A disproportionation of 6-amino-5-benzylindeneamino-1,3-dimethyluracils in formamide : formation of 6,7-diaryl-1,3-dimethyllumazines and theophylline The partial synthesis of burnamicine The partial synthesis of 16-epi-pleiocarpamine Reactions of dihydroindeno-1,3,4-oxadiazepine derivative with aryl isocyanates and dimethyl acetylenedicarboxylate Studies on the synthesis of bisindole alkaloids Ⅲ : the synthesis of leurosine and 3'-hydroxyvinblastine Benzo- and indoloquinolizine derivatives part Ⅸ : a novel route to the tribenzo[a,c,h]quinolizine system by electrophilic and photolytic cyclisation of immonium salts A synthesis of aporphine derivatives Studies on the furan series part Ⅵ : a facile method of acylating furans and thiophenes
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Table of ContentsPhotochemical reactions of 1,2,3,3a,4,5-hexahydro-N-phenylacetylindol-6-ones Cycloaddition extrusion reaction of 2- or 4-(methylthio)thiocarbonylimino-1,2 or 1,4-dihydropyridine derivatives with dimethyl acetylenedicarboxylate The reactions of ethyl 2-quinolyl- and 2-pyridylcyanoacetate Synthesis of 9-azaprostaglandin analogs Structure elucidation of six new non-phenolic alkaloids isolated from Corydalis ochotensis var. raddeana The reaction of indoles with succinimido-sulfonium salts Ⅰ : a convenient synthesis of indole-3-thioethers The reaction of indoles with succinimido-sulfonium salts Ⅱ : a new synthesis of 2-alkyl and allyl indoles Reactions of phenyl-pyrylium salts with phenacylidenedimethylsulfurane Syntheses of the basic structures of corynoline and related alkaloids A novel conversion of 7-azapteridines to purines Thalibrine and northalibrine, new bisbenzylisoquinoline alkaloids from Thalictrum rochebrunianum Semisynthetic β-lactam antibiotics Ⅰ : α-isocyanobenzyl-penicillins and cephalosporins Application of benzofurazan oxide to the synthesis of heteroaromatic N-oxides Furanosesquiterpenoids
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Table of ContentsReaction of 3-bromo-4-nitroquinoline 1-oxide with enamines : a novel cyclization reaction to furo[3,2-b]quinoline system Photoreductive cyclization of 5-nitro-6-styryl(or anilino)uracil derivatives to pyrrolo[3,2-d]pyrimidine and alloxazine derivatives Photoisomerisation of trans-4b,10b,11,12-tetrahydrobenzo[c]phenanthridin-6(5H)-one to the cis-isomer Sciadenine, a new bisbenzylisoquinoline alkaloid from Sciadotenia toxifera Photochemistry of isonicotinohydrazide and its analogs in alcohol Recent chemical progress in berberine alkaloids Biosynthesis of secoiridoid glucosides Isoxazolin-5-ones chemistry and biology of a new class of plant products Norditerpene dilactones from Podocarpus species
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