NOVEL CHLORINS WITH A DELTA-LACTONE RING FUSED AT RING-D

Authors
MIRONOV AF EFREMOV AV EFREMOVA OA BONNETT R
Citation
Af. Mironov et al., NOVEL CHLORINS WITH A DELTA-LACTONE RING FUSED AT RING-D, Tetrahedron letters, 38(38), 1997, pp. 6775-6778
Citations number
6
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron letters → ACNP
ISSN journal
00404039
Volume
38
Issue
38
Year of publication
1997
Pages
6775 - 6778
Database
ISI
SICI code
0040-4039(1997)38:38<6775:NCWADR>2.0.ZU;2-V
Abstract
Reaction of purpurins (1a,b) with DDQ resulted in oxidative ring closu re at ring D to give novel delta-lactones (2a,b), mild treatment of wh ich with TFA/methanol gave chlorins (3a,b) possessing a hydroxy group at C-18. Prolonged treatment of (3a,b) with TFA resulted in their dehy dration and the formation of porphyrins (4a,b). (C) 1997 Elsevier Scie nce Ltd.