Γ‐Lakton‐ cis ‐anellierung an Δ 2 ‐ und Δ 3 ‐ Cholesten | Zendy

Dammann Reinhard | Zendy; Braun Manfred | Zendy; Seebach Dieter | Zendy

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Γ‐Lakton‐ cis ‐anellierung an Δ 2 ‐ und Δ 3 ‐ Cholesten

Author(s) -

Dammann Reinhard,

Braun Manfred,

Seebach Dieter

Publication year - 1976

Publication title -

helvetica chimica acta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.74

H-Index - 82

eISSN - 1522-2675

pISSN - 0018-019X

DOI - 10.1002/hlca.19760590820

Subject(s) - chemistry , adduct , spectral line , nmr spectra database , mass spectrum , stereochemistry , medicinal chemistry , ion , organic chemistry , physics , astronomy

γ‐Lactone‐ cis ‐annulation to Δ 2 ‐ and Δ 3 ‐ Cholestene. From Δ 2 ‐ and Δ 3 ‐ cholestene the γ‐lactones 11a , 11b , 12a , and 12b are synthesized through the dibromocarbene adducts 3 and 4 , the bromohydrines 5 and 6 , the oxapiropentanes 7 and 8 , and the cyclobutanones 9a , 9b and 10a , 10b , respectively. The 13 C‐NMR.‐spectra of 1–8 and 11 as well as the ORD.‐spectra of the cyclobutanones 9 and 10 are reported.

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