Carbon-13 N.M.R. Lanthanide-induced shift study of some D:A-Friedooleananes

Mohammed I.M. Wazeer; Vijaya Kumar; Gamini Weeratunga; Dharmassree B.T. Wijeratna

doi:10.1071/CH9842571

Carbon-13 N.M.R. Lanthanide-induced shift study of some D:A-Friedooleananes

Mohammed I.M. Wazeer^*
, Vijaya Kumar
, Gamini Weeratunga
, Dharmassree B.T. Wijeratna

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Carbon-13 n.m.r. signal assignments for D:A-friedooleanan-28-ol (1), D:A-friedooleanan-29-ol (2), D:A-friedooleanan-30-ol (3), D:A-friedooleanan-30-al (4), D:A-friedooleanan-21α-ol (5) and 21α- hydroxy-D:A-friedooleanan-3-one (6) are reported. Lanthanide-induced shifts of the hydroxy compounds indicate that the oxygenation in the vicinity of ring E in these molecules does not affect the chair-chair-chair-twistboat-boat conformation proposed for D:A-friedooleananes.

Original language	English
Pages (from-to)	2571-2575
Number of pages	5
Journal	Australian Journal of Chemistry
Volume	37
Issue number	12
DOIs	https://doi.org/10.1071/CH9842571
State	Published - 1984

ASJC Scopus subject areas

General Chemistry

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title = "Carbon-13 N.M.R. Lanthanide-induced shift study of some D:A-Friedooleananes",

abstract = "Carbon-13 n.m.r. signal assignments for D:A-friedooleanan-28-ol (1), D:A-friedooleanan-29-ol (2), D:A-friedooleanan-30-ol (3), D:A-friedooleanan-30-al (4), D:A-friedooleanan-21α-ol (5) and 21α- hydroxy-D:A-friedooleanan-3-one (6) are reported. Lanthanide-induced shifts of the hydroxy compounds indicate that the oxygenation in the vicinity of ring E in these molecules does not affect the chair-chair-chair-twistboat-boat conformation proposed for D:A-friedooleananes.",

author = "Wazeer, \{Mohammed I.M.\} and Vijaya Kumar and Gamini Weeratunga and Wijeratna, \{Dharmassree B.T.\}",

year = "1984",

doi = "10.1071/CH9842571",

language = "English",

volume = "37",

pages = "2571--2575",

journal = "Australian Journal of Chemistry",

issn = "0004-9425",

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T1 - Carbon-13 N.M.R. Lanthanide-induced shift study of some D:A-Friedooleananes

AU - Wazeer, Mohammed I.M.

AU - Kumar, Vijaya

AU - Weeratunga, Gamini

AU - Wijeratna, Dharmassree B.T.

PY - 1984

Y1 - 1984

N2 - Carbon-13 n.m.r. signal assignments for D:A-friedooleanan-28-ol (1), D:A-friedooleanan-29-ol (2), D:A-friedooleanan-30-ol (3), D:A-friedooleanan-30-al (4), D:A-friedooleanan-21α-ol (5) and 21α- hydroxy-D:A-friedooleanan-3-one (6) are reported. Lanthanide-induced shifts of the hydroxy compounds indicate that the oxygenation in the vicinity of ring E in these molecules does not affect the chair-chair-chair-twistboat-boat conformation proposed for D:A-friedooleananes.

AB - Carbon-13 n.m.r. signal assignments for D:A-friedooleanan-28-ol (1), D:A-friedooleanan-29-ol (2), D:A-friedooleanan-30-ol (3), D:A-friedooleanan-30-al (4), D:A-friedooleanan-21α-ol (5) and 21α- hydroxy-D:A-friedooleanan-3-one (6) are reported. Lanthanide-induced shifts of the hydroxy compounds indicate that the oxygenation in the vicinity of ring E in these molecules does not affect the chair-chair-chair-twistboat-boat conformation proposed for D:A-friedooleananes.

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DO - 10.1071/CH9842571

M3 - Article

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SN - 0004-9425

VL - 37

SP - 2571

EP - 2575

JO - Australian Journal of Chemistry

JF - Australian Journal of Chemistry

IS - 12

ER -

Carbon-13 N.M.R. Lanthanide-induced shift study of some D:A-Friedooleananes

Abstract

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