A novel synthesis of the pyrazolo[1,5-a]quinoline ring system. New N1-C2 bridged DNA gyrase inhibitors via a novel tandem 1,4-conjugate addition-Michael [3+2] annulation process

The synthesis of novel polycyclic hetero

The synthesis of novel polycyclic heterocyclic ring systems via photocyclization. 21. Naphtho[2′,1′:4,5]thieno[2,3-c]naphtho[1,2-f]-quinoline, naphtho[2′,1′:4,5]thieno[2,3-c]naphtho[1,2-f][1,2,4]-triazolo[4,3-a]quinoline and naphtho[2′,1′:4,5]thieno[2,3-c]naphtho[1,2-f]-tetrazolo[1,5-a]quinoline

✍ Jiann-Kuan Luo; Ronald F. Federspiel; Raymond N. Castle 📂 Article 📅 2000 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 270 KB 👁 1 views

## Abstract Photocyclization of 3‐chloro‐__N__‐(3‐phenanthryl)naphtho[1,2‐__b__]thiophene‐2‐carboxamide (**12**) furnished only one of the two possible isomers, __i.e.__, naphtho[2′,1′:4,5]thieno[2,3‐__c__]naphtho[1,2‐__f__]quinolin‐6(5__H__)‐one (**13**), which was further elaborated to yield the

The synthesis of novel polycyclic hetero

The synthesis of novel polycyclic heterocyclic ring systems via photocyclization. 19. Thieno[3′,2′:4,5]thieno[2,3-c]-naphtho[1,2-f]quinoline, thieno[3′,2′:4,5]thieno[2,3-c]naphtho-[1,2-f][1,2,4]triazolo[4,3-a]quinoline and thieno[3′,2′:4,5]-thieno[2,3-c]naphtho[1,2-f]tetrazolo[1,5-a]quinoline

✍ Jiann-Kuan Luo; Ronald F. Federspiel; Raymond N. Castle 📂 Article 📅 1997 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 351 KB 👁 1 views

## Abstract Photocyclization of 3‐chloro‐N‐(3‐phenanthryl)thieno[2,3‐__b__]thiophene‐2‐carboxamide (5) yielded only one of the two possible structural isomers, thieno[3′,2′:4,5]thieno[2,3‐__c__]naphtho[1,2‐__f__]quinolin‐6(5__H__)‐one (6), which was further elaborated to afford the unsubstituted ri

ChemInform Abstract: The Synthesis of No

ChemInform Abstract: The Synthesis of Novel Polycyclic Heterocyclic Ring Systems via Photocyclization. Part 21. Naphtho[2′,1′:4,5]thieno[2,3-c]naphtho[1,2-f]quinoline, Naphtho[2′,1′:4,5]thieno[2,3-c]naphtho[1,2-f][1,2,4]triazolo [4,3-a]quinoline, and Naphtho[2′,1′:4,5]thieno[2,3-c]naphtho[1,2-f]tetrazolo[1,5-a]quinoline.

✍ Jiann-Kuan Luo; Ronald F. Federspiel; Raymond N. Castle 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 34 KB 👁 1 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v

ChemInform Abstract: Synthesis of Novel

ChemInform Abstract: Synthesis of Novel Polycyclic Heterocyclic Ring Systems via Photocyclization. Part 19. Thieno[3′,2′:4,5]thieno[2,3-c]naphtho[1,2-f]quinoline (VI), Thieno[3′,2′:4,5]thieno[2,3-c]naphtho[1,2-f][1,2,4]triazolo [4,3-a]quinoline (VIII) and Thieno[3′,2′:4,5]thieno[2,3-c]naphtho[1,2-f]tetrazolo[1,5-a]quinoline (IX).

✍ J.-K. LUO; R. F. FEDERSPIEL; R. N. CASTLE 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 37 KB 👁 1 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v

The synthesis of novel polycyclic hetero

The synthesis of novel polycyclic heterocyclic ring systems via photocyclization. 20. Benzo[h]thieno[3′,2′:4,5]thieno[2,3-c]-quinoline, benzo[f]thieno[3′,2′:4,5]thieno[2,3-c]quinoline, benzo[f]thieno[3′,2′:4,5]thieno[2,3-c]tetrazolo[1,5-a]quinoline and benzo[f]thieno[3′,2′:4,5]thieno[2,3-c][1,2,4]triazolo[4,3-a]quinoline

✍ Jiann-Kuan Luo; Ronald F. Federspiel; Raymond N. Castle 📂 Article 📅 1998 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 347 KB 👁 1 views

## Abstract Four previously unknown polycyclic heterocyclic ring systems, namely, benzo[__h__]thieno[3′,2′:4,5]‐thieno[2,3‐__c__]quinoline (6), benzo[__h__]thieno[3′,2′:4,5]thieno[2,3‐__c__]quinoline (11), benzo[__f__]thieno‐[3′,2′:4,5]thieno[2,3‐__c__]tetrazolo[1,5‐__a__]quinoline (12) and benzo[_

The synthesis of novel polycyclic hetero

The synthesis of novel polycyclic heterocyclic ring systems via photocyclization. 22 Dibenzo[f,h]benzothieno[2,3-c]quinoline, dibenzo[f,h]benzothieno[2,3-c][1,2,4]triazolo[4,3-a]quinoline and dibenzo[f,h]naphtho[2′,1′:4,5]thieno[2,3-c]quinoline

✍ Jiann-Kuan Luo; Maria P. Cabal; Ronald F. Federspiel; Raymond N. Castle 📂 Article 📅 2000 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 325 KB 👁 1 views

## Abstract Photocyclization of 3‐chloro‐__N__‐(9‐phenanthryl)benzo[__b__]‐thiophene‐2‐carboxamide (**3**) and 3‐chloro‐__N__‐(9‐phenanthryl)‐naphtho[1,2‐__b__]thiophene‐2‐carboxamide (**10**) yielded dibenzo[__f,h__]benzothieno[2,3‐__c__]‐quinolin‐10(9__H__)‐one (**4**) and dibenzo[__f,h__]naphtho