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Aristolactams and 4,5-dioxoaporphines from Piper longum
Abstract Nine alkaloids were isolated from the cold ethanol extract of Piper longum roots, of which six known compounds were identified as cepharadione B, cepharadione A, cepharanone B, aristolactam… Expand
Insect feeding deterrents from the medicinal plant Tylophora asthmatica
Alkaloid extractables of Tylophora asthmatica (Asclepiadaceae) have been tested for the antifeedant activity against Spodoptera litura by incorporating them in semisynthetic and cellulose diets. The… Expand
Lignans from Piper cubeba
Abstract From the hot petrol extract of Piper cubeba ftuits, six lignans were isolated. Two of these, which have been obtained from a natural source for the first time, have been characterized as (2… Expand
Piperolactam D, a new aristolactam from Indian Piper species.
Isolation of phenanthroindolizidine alkaloids and a novel biphenylhexahydroindolizine alkaloid from Ficus hispida
Minor alkaloids of tylophora asthmatica x-ray analysis of tylophorinidine
Abietane diterpene quinones and a new diterpene epoxide fromSalvia moorcraftiana
A new abietane diterpene epoxide and five known abietane diterpene quinones have been isolated for the first time fromSalvia moorcraftiana roots. The epoxide has been identified as 5α-hydroxy-abieta… Expand
Polyoxygenated flavones from Ageratum conyzoides
Abstract Twelve polyoxygenated flavones have been isolated from Ageratum conyzoides, three of which are new natural flavones, namely ageconyflavones A (5,6,7-trimethoxy-3′,4′-methylenedioxyflavone),… Expand
Physalin D, a New 13, 14–Seco–16, 24–Cyclo Steroid from Physalis minima