Carbon‐13 signal assignments of taraxasteryl acetate, taraxasteryl palmitate, taraxasterol and epi‐friedelinyl acetate are reported. Some signal assignments of the friedelanones, reported recently by others, are inconsistent and require revision. Copyright © 1981 Heyden & Son Ltd.

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A K MUKHOPADHYAY

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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

The carbon‐13 NMR spectra of the novel rearranged hopanes, spergulagenin‐A and related triterpenoids, and 21α‐Hopanes, mollugogenol‐A, mollugogenol‐G diacetate and related compounds, were recorded. Their analyses were aided by the chemical shifts of some model compounds and by the change in chemical shifts produced on change of substituents/s. Copyright © 1981 Heyden & Son Ltd.

Journal	Organic Magnetic Resonance
Publisher	-
ISSN	0030-4921