PATENT CLAIM ANALYSIS

Application Number: 16063615
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-03
Patent Classification: ["549", "275000"]

Abstract:
Disclosed are a compound as shown in formula I or formula II or a pharmaceutically acceptable salt thereof, wherein R 1  is selected from pyrazinyl or substituted pyrazinyl; and R 2  is selected from pyrazinyl or substituted pyrazinyl, phenyl or substituted phenyl, alkyl or substituted alkyl.

Claim (Index 17):
A preparation method of the compound as shown in the formula IIa, formula IIb or formula IIc in  claim 5 , characterized by comprising the following steps:\n (i) dissolving the ginkgolide B and a compound as shown in formula V in an organic solvent, adding a catalyst and a condensing agent, performing a reaction for a period of 4 to 6 hours at a temperature of 20\u00b0 C.-30\u00b0 C. to obtain a reaction solution; wherein the compound as shown in formula V for preparing the compound as shown in formula IIa is: the compound as shown in formula V for preparing the compound as shown in formula IIb is: the compound as shown in formula V for preparing the compound as shown in formula IIc is: and\n (ii) separating and purifying the reaction solution obtained in the step (i), thereby obtaining the compound as shown in the formula IIa, formula IIb or formula IIc.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 98.0
- Lexical Diversity: 1.7
- Patent Class: 549.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13287776', '15315363', '15123961', '14371054', '14403014']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6760674597038642
- 35 USC 102 Novelty (BERT): 0.5180321654477459
- Combined Prediction Score: 0.6602639302782524
- Mean Citation Score: 230.952538
- Max Citation Score: 236.55334
- Similarity Product: 136.3552204779005

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test