alkannin
National Institutes of Health
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The new pyrrolizidine alkaloid (PA) 3 ́-O-acetylechinatine N-oxide (7), along with two more known PAs (5, 6), two known…
There are few natural products with histories as rich as those of the enantiomeric naphthoquinones alkannin and shikonin (A/S…
The invention discloses a high-optical-purity aklannin and Alkannin naphthazarin nuclear parent hydroxyl methylation carbonyl…
The invention discloses a naphthazarin nucleus oxialkyl and acyl substituted alkannin derivative, its preparation and an…
The invention discloses a method for extracting alkannin from alkanet, which is characterized in that the alkanet is mixed with…
A new approach for asymmetric synthesis of alkannin and shikonin is presented. The chiral centers of the targets were introduced…
The present invention relates to a total synthesis method for preparing racemate alkannin. Said invention uses naphthaldehyde…
The process of extracting alkannin is described. Such as characteristics dissolution, stability and sensibility to medium are…
Covalent modification of four isolated alkannin derivatives (alkannin, acetylalkannin, β, β dimethylacrylalkannin and…
The present invention pertains to a lipstick. It comprises a wax, grease, pigments, perfumes, lipsticks comprising by weight…