Switching between the [2π+ 2σ] and Hetero‐[4π+ 2σ] Cycloaddition Reactivity of Bicyclobutanes with Lewis Acid Catalysts Enables the Synthesis of Spirocycles and …

JJ Wang, L Tang, Y **ao, WB Wu, G Wang… - Angewandte …, 2024 - Wiley Online Library
The exploration of the complex chemical diversity of bicyclo [n. 1.1] alkanes and their use as
benzene bioisosteres has garnered significant attention over the past two decades …

Lewis acid catalyzed [4+ 2] annulation of bicyclobutanes with dienol ethers for the synthesis of bicyclo [4.1. 1] octanes

S Nicolai, J Waser - Chemical Science, 2024 - pubs.rsc.org
Bicyclic carbocycles containing a high fraction of Csp3 have become highly attractive
synthetic targets because of the multiple applications they have found in medicinal …

Chemistry of renieramycins. Part 6: Transformation of renieramycin M into jorumycin and renieramycin J including oxidative degradation products, mimosamycin …

N Saito, C Tanaka, Y Koizumi, K Suwanborirux… - Tetrahedron, 2004 - Elsevier
The transformation of renieramycin M () into renieramycin J () and jorumycin () is presented
along with the results of antiproliferative assay data. The chemical stability and the oxidative …

The phytochemistry of Stevia: a general survey

CM Cerda-García-Rojas, R Pereda-Miranda - Stevia, 2001 - api.taylorfrancis.com
Stevia, a New World genus of the tribe Eupatorieae in the Asteraceae family, extends from
the southwestern United States to northern Argentina, through Mexico, Central America, the …

Longipinene derivatives from Lavandula stoechas subsp. stoechas

A Ulubelen, N Gören, Y Olcay - Phytochemistry, 1988 - Elsevier
The aerial parts of Lavandula stoechas subsp. stoechas afforded two longipinene
derivatives one of which is a new compound. The structures were elucidated by spectral …

The chemistry of the genus Stevia (Asteraceae)

LR Hernández, CAN Catalán… - Revista de la Academia …, 1998 - raccefyn.co
Se describen brevemente las características morfológicas y los estudios citológicos
realizados sobre el género Stevia. Teniendo en cuenta que la química del género podría …

Antifeedant and cytotoxic activity of longipinane derivatives

CM Cerda-García-Rojas, E Burgueño-Tapia… - Planta …, 2010 - thieme-connect.com
The polyoxygenated longipinane derivatives 1–8 were tested as antifeedant compounds
against the herbivorous insects Spodoptera littoralis, Rhopalosiphum padi, and Myzus …

Absolute configuration of the α-methylbutyryl residue in longipinene derivatives from Stevia pilosa

R Álvarez-Garcı́a, JM Torres-Valencia, LU Román… - Phytochemistry, 2005 - Elsevier
The absolute configuration of the α-methylbutyryl residue in (4R, 5S, 7S, 8S, 9S, 10R, 11R, 2
″S)-7-angeloyloxy-9-hydroxy-8-(α-methylbutyryloxy)-longipin-2-en-l-one and (4R, 5S, 7S …

Wagner-Meerwein rearrangements of longipinane derivatives

LU Roman, JD Hernandez, RE Del Rio… - The Journal of …, 1991 - ACS Publications
Tricyclic strained substances, such as longipinene de-rivatives1 offer the possibility to
generate new structures because of bond migrations can be promoted to release the four …

Longipinene derivatives from Stevia lucida and S. triflora

JM Amaro, M Adrián, CM Cerda, P Joseph-Nathan - Phytochemistry, 1988 - Elsevier
The aerial parts of Stevia lucida afforded longipin-2-ene-7β-angeloyloxy-9α-acetyloxy-1-
one, while the aerial parts of S. triflora gave rastevione, 2-dehydrorastevione and the new …