Carbon‐13 NMR signal assignment of a number of polyoxygenated triterpenes of the olean‐12‐ene and urs‐12‐ene series, carried out by considering the changes in chemical shift produced by the change of oxygenation pattern(s), and using methyl oleanolate as a model, are reported. Copyright © 1981 Heyden & Son Ltd.

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University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Organic Magnetic Resonance

Masthead

Phytochemistry

The structure and stereochemistry of barrigenic acid, a new triterpene acid sapogenin from Barringtonia acutangula

Tetrahedron Letters

Carbon-13 nmr spectra of urs-12-enes and application to structural assignments of components of tissue cultures

The stereochemical dependence of 13C chemical shifts in olean-12-enes and urs-12-enes as an aid to structural assignment

Carbon-13 NMR spectra of olean-12-enes. Full signal assignments including quaternary carbon signals assigned by use of indirect 13C, 1H spin couplings

Carbonâ€13 NMR spectroscopy of some pentacyclic triterpenoids

Journal	Organic Magnetic Resonance
Publisher	-
ISSN	0030-4921