Online article for Non-subscribers

Pay per view

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact:

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

Paper | Regular issue | Vol 29, No. 7, 1989, pp.1355-1368
Published online, 1st January, 1970
DOI: 10.3987/COM-89-4993
Syntheses and Chiroptical Properties of Some New N-(5-benzofurazanoyl)-L-α-amino Acids and Esters

Sadiq A. Saleh* and Mustafa M. El-Abadelah

*Chemistry Department, Yarmouk University, Irbid, Jordan


A series of new N-(5-benzofurazanoyl)-L-α-amino acids (Ia) and esters (Ib) have been prepared. The cd spectra of the L-aliphatic and L-aromatic amino acid derivatives (Ia) display, in organic solvents, sign inversion for the measured Cotton effect (CE) bands. Comparable trend is also observed for the respective amino ester analogues (Ib). This chiroptical behaviaur might be attributed to differences in conformational equilibria of either series. 1H-Nmr and ms spectra of the title compounds are discussed.