Synthesis 2021; 53(16): 2903-2910
DOI: 10.1055/a-1500-1407
paper

Unified Approach for the Total Synthesis of Bis-THF C15 Acetogenins: A Chloroenyne from Laurencia majuscula, Laurendecumenyne B and Laurefurenynes A/B

Sibadatta Senapati
a   Division of Organic Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
b   Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
,
Nivedya A. Unmesh
a   Division of Organic Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
,
Manoj N. Shet
a   Division of Organic Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
,
Iram Ahmad
a   Division of Organic Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
,
Nandu Ajikumar
a   Division of Organic Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
,
a   Division of Organic Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
b   Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
› Author Affiliations
Authors acknowledge CSIR for generous research funding and for a research fellowship to SS.


Abstract

A highly diastereoselective total synthesis of several bis-THF C15 acetogenin natural products, chloroenyne from Laurencia majuscula, laurendecumenyne B, and laurefurenynes A/B, is reported. Additionally the synthesis of an advanced intermediate reported in the earlier total synthesis of (E/Z)-elatenynes (formal synthesis) is described. The salient features in the synthesis include epoxide opening, Birch reduction, Sharpless asymmetric dihydroxylation-cycloetherification, SN2 halo­genation, and a relay cross metathesis.

Supporting Information

Primary Data



Publication History

Received: 09 April 2021

Accepted after revision: 05 May 2021

Accepted Manuscript online:
05 May 2021

Article published online:
02 June 2021

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