Synthesis of 6H,8H‐isoquino[2,3‐c][1,3]benzothiazin‐8‐ones

L. Fodor, János Szabó, G. Bernáth, P. Sohár, David B. Maclean, Richard W. Smith, Ichiya Ninomiya, Takeaki Naito

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

6H,8H‐Isoquino‐1,3‐benzothiazin‐8‐ones have been prepared by reaction of 6,7‐dimethoxy‐2H‐1,3‐benzo‐thiazines with homophthalic anhydride and by photocyclization of 3‐benzoyl‐4‐methylene‐6,7‐dimethoxy 2H‐1,3‐benzothiazine. The compounds are thia analogues of protoberberine alkaloids containing a sulfur atom at C‐5 and a lactam function at C‐8. The mass spectra of the title compounds are discussed.

Original languageEnglish
Pages (from-to)333-337
Number of pages5
JournalJournal of Heterocyclic Chemistry
Volume26
Issue number2
DOIs
Publication statusPublished - 1989

Fingerprint

Lactams
Anhydrides
Sulfur
Alkaloids
Atoms
protoberberine

ASJC Scopus subject areas

  • Organic Chemistry

Cite this

Synthesis of 6H,8H‐isoquino[2,3‐c][1,3]benzothiazin‐8‐ones. / Fodor, L.; Szabó, János; Bernáth, G.; Sohár, P.; Maclean, David B.; Smith, Richard W.; Ninomiya, Ichiya; Naito, Takeaki.

In: Journal of Heterocyclic Chemistry, Vol. 26, No. 2, 1989, p. 333-337.

Research output: Contribution to journalArticle

Fodor, L. ; Szabó, János ; Bernáth, G. ; Sohár, P. ; Maclean, David B. ; Smith, Richard W. ; Ninomiya, Ichiya ; Naito, Takeaki. / Synthesis of 6H,8H‐isoquino[2,3‐c][1,3]benzothiazin‐8‐ones. In: Journal of Heterocyclic Chemistry. 1989 ; Vol. 26, No. 2. pp. 333-337.
@article{cf0789fbc14f45f2a3914e9a820c4816,
title = "Synthesis of 6H,8H‐isoquino[2,3‐c][1,3]benzothiazin‐8‐ones",
abstract = "6H,8H‐Isoquino‐1,3‐benzothiazin‐8‐ones have been prepared by reaction of 6,7‐dimethoxy‐2H‐1,3‐benzo‐thiazines with homophthalic anhydride and by photocyclization of 3‐benzoyl‐4‐methylene‐6,7‐dimethoxy 2H‐1,3‐benzothiazine. The compounds are thia analogues of protoberberine alkaloids containing a sulfur atom at C‐5 and a lactam function at C‐8. The mass spectra of the title compounds are discussed.",
author = "L. Fodor and J{\'a}nos Szab{\'o} and G. Bern{\'a}th and P. Soh{\'a}r and Maclean, {David B.} and Smith, {Richard W.} and Ichiya Ninomiya and Takeaki Naito",
year = "1989",
doi = "10.1002/jhet.5570260212",
language = "English",
volume = "26",
pages = "333--337",
journal = "Journal of Heterocyclic Chemistry",
issn = "0022-152X",
publisher = "Heterocorporation",
number = "2",

}

TY - JOUR

T1 - Synthesis of 6H,8H‐isoquino[2,3‐c][1,3]benzothiazin‐8‐ones

AU - Fodor, L.

AU - Szabó, János

AU - Bernáth, G.

AU - Sohár, P.

AU - Maclean, David B.

AU - Smith, Richard W.

AU - Ninomiya, Ichiya

AU - Naito, Takeaki

PY - 1989

Y1 - 1989

N2 - 6H,8H‐Isoquino‐1,3‐benzothiazin‐8‐ones have been prepared by reaction of 6,7‐dimethoxy‐2H‐1,3‐benzo‐thiazines with homophthalic anhydride and by photocyclization of 3‐benzoyl‐4‐methylene‐6,7‐dimethoxy 2H‐1,3‐benzothiazine. The compounds are thia analogues of protoberberine alkaloids containing a sulfur atom at C‐5 and a lactam function at C‐8. The mass spectra of the title compounds are discussed.

AB - 6H,8H‐Isoquino‐1,3‐benzothiazin‐8‐ones have been prepared by reaction of 6,7‐dimethoxy‐2H‐1,3‐benzo‐thiazines with homophthalic anhydride and by photocyclization of 3‐benzoyl‐4‐methylene‐6,7‐dimethoxy 2H‐1,3‐benzothiazine. The compounds are thia analogues of protoberberine alkaloids containing a sulfur atom at C‐5 and a lactam function at C‐8. The mass spectra of the title compounds are discussed.

UR - http://www.scopus.com/inward/record.url?scp=84986534123&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84986534123&partnerID=8YFLogxK

U2 - 10.1002/jhet.5570260212

DO - 10.1002/jhet.5570260212

M3 - Article

AN - SCOPUS:84986534123

VL - 26

SP - 333

EP - 337

JO - Journal of Heterocyclic Chemistry

JF - Journal of Heterocyclic Chemistry

SN - 0022-152X

IS - 2

ER -