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Yoshito Kishi (1937-2023)
Yoshito Kishi (1937-2023)
Professor. Yoshito Kishi,
a member of the Honorary Editorial Associates of HETEROCYCLES,
has passed away on January 9, 2023 at the age of 85.
I deeply express my regret over his death.
Kunio Ogasawara
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January 13, 2023
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Paper | Regular issue | Vol 43, No. 9, 1996, pp.1959-1966
Published online, 1st January, 1970■ Formation of a Ten-membered Lactam by Chloroacetamide Photocyclization on the Indole 4-Position
Published online, 1st January, 1970
DOI: 10.3987/COM-96-7533
■ Formation of a Ten-membered Lactam by Chloroacetamide Photocyclization on the Indole 4-Position
M.-LLuïsa Bennasar, Ester Zulaica, Antonio Ramírez, and Joan Bosch*
*Laboratory of Organic Chemistry, Faculty of Pharmacy, University of Barcelona, Av. de Joan XXIII, s/n, 08028 Barcelona, Spain
Abstract
Photocyclization of tricyclic chloroacetamide (3) occurs on the indole 4-position to give the ten-membered lactam (4), whose structure was confirmed by conversion to the tetracyclic amine (6). Some conformational aspects of lactam (4) and thiolactam (5), namely the observation of conformers by nmr as a consequence of a restricted inversion of the ten-membered ring, are discussed.
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