Heliotropium Addendum

Pyrrolizidine Alkaloids from Heliotropium

Investigation of the pyrrolizidine alkaloids of Heliotropium arbainense resulted in the isolation and identification of heliotrine, europine and 7-angelylheliotrine. From H. ovalifolium three alkaloids were isolated: supinine, 7-angelylheliotridine and an alkaloid which was shown to be of the heliotridine monoester type with a dehydrated viridifloric acid.

Pyrrolizidine Alkaloids from Heliotropium indicum

Um novo alcalóide denominado Helindicina (1), e o conhecido licopsamina (2) foram isolados das raízes de Heliotropium indicum (Boraginaceae). As estruturas foram estabelecidas tendo como base um amplo estudo de 1D e 2D RMN (COSY, HMBC, HMQC, NOESY) e HREIMS. Este representa o primeiro relato de um alcalóide contendo um anel lacônico no gênero Heliotropium. Estes alcalóides mostraram moderada at...

Grøstl Addendum

This document is an addendum to the submission document of Grøstl, which was selected for the second round of NIST’s SHA-3 competition [18]. We stress that we do not change the specification of Grøstl. In other words, Grøstl is defined exactly as specified in the original submission document [8]. In this document we mention a few alternative descriptions of our SHA-3 candidate Grøstl and descri...

Addendum 2

Regression Addendum

Linear algebra is used to demonstrate two important assertions in the main text: (1) that the expectation value of the chi-square statistic χ is equal to the degrees of freedom—the number of data points less the number of fit parameters and (2) the “∆χ = 1” rule—which states that if any fit parameter is offset one standard deviation from its best-fit value, the minimum χ (with that parameter fi...